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Open Access
June 26, 2025
The Relationship Between Lymphocyte Count and Mortality in Patients with Dysphagia
Min Wei
,
Chengming Ke
,
Sumin Wu
World Journal of Clinical Medicine Research
2025
,
5(1),
40-51.
DOI:
10.31586/wjcmr.2025.6128
Views
389
Downloads
50
Abstract
Background:
Dysphagia is a common functional impairment in elderly populations, often leading to severe complications such as malnutrition and aspiration pneumonia, significantly increasing healthcare burdens. Currently, effective prognostic assessment tools are lacking. The absolute lymphocyte count (ALC), a biomarker reflecting immune-nutritional status, has potential predictive value in this context, though its role in dysphagia prognosis remains unclear.
Methods:
This retrospective cohort study included 253 dysphagic patients who received percutaneous endoscopic gastrostomy (PEG) or total parenteral nutrition (TPN) between 2014 and 2017. Five patients with missing ALC were excluded. Cox regression models assessed the association between ALC and mortality. ALC was analyzed as both continuous variable (using restriocted cubic splines) and categorical tertiles, with additional threshold analyses to assess non-linearity. Kaplan–Meier survival curves and subgroup analyses were also performed.
Results:
Lower ALC was associated with poorer nutritional status, higher inflammatory markers, and greater comorbidity burden. Higher ALC was independently associated with reduced mortality (adjusted HR: 0.60; 95% CI: 0.44–0.83;
p
= 0.002). Patients in the highest tertile had significantly better survival than those in the lowest (HR: 0.37; 95% CI: 0.23–0.59;
P
< 0.001). A non-linear threshold effect was identified at ALC = 1.899×10
9
/L (
p
for non-linearity = 0.009). Kaplan–Meier analysis confirmed improved survival with higher ALC (
p
[...] Read more.
Background:
Dysphagia is a common functional impairment in elderly populations, often leading to severe complications such as malnutrition and aspiration pneumonia, significantly increasing healthcare burdens. Currently, effective prognostic assessment tools are lacking. The absolute lymphocyte count (ALC), a biomarker reflecting immune-nutritional status, has potential predictive value in this context, though its role in dysphagia prognosis remains unclear.
Methods:
This retrospective cohort study included 253 dysphagic patients who received percutaneous endoscopic gastrostomy (PEG) or total parenteral nutrition (TPN) between 2014 and 2017. Five patients with missing ALC were excluded. Cox regression models assessed the association between ALC and mortality. ALC was analyzed as both continuous variable (using restriocted cubic splines) and categorical tertiles, with additional threshold analyses to assess non-linearity. Kaplan–Meier survival curves and subgroup analyses were also performed.
Results:
Lower ALC was associated with poorer nutritional status, higher inflammatory markers, and greater comorbidity burden. Higher ALC was independently associated with reduced mortality (adjusted HR: 0.60; 95% CI: 0.44–0.83;
p
= 0.002). Patients in the highest tertile had significantly better survival than those in the lowest (HR: 0.37; 95% CI: 0.23–0.59;
P
< 0.001). A non-linear threshold effect was identified at ALC = 1.899×10
9
/L (
p
for non-linearity = 0.009). Kaplan–Meier analysis confirmed improved survival with higher ALC (
p
< 0.0001). Subgroup analyses showed the protective effect of higher ALC was consistent across age, sex, BMI, PEG use, and comorbidity strata, with no significant interactions.
Conclusions:
ALC is an independent, non-linear predictor of mortality in older dysphagic patients and may aid clinical risk stratification across diverse patient subgroups.
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June 26, 2025
Mathematical modelling of the impact of HIV prevention strategies among female sex workers on public health in Burkina Faso
Serge M. A. SOMDA
,
Bernard E. A. DABONÉ
,
Boureima SANGARÉ
,
Sado TRAORÉ
Journal of Mathematics Letters
2025
,
3(1),
22-40.
DOI:
10.31586/jml.2025.6104
Views
384
Downloads
33
Abstract
This article presents a mathematical model designed to simulate the impact of targeted interventions aimed at preventing HIV transmission among female sex workers (FSWs) and their clients, while also analyzing their effects on the health of the general population. The compartmental model distinguishes between high-risk populations (FSWs and their clients) and low-risk populations (sexually active
[...] Read more.
This article presents a mathematical model designed to simulate the impact of targeted interventions aimed at preventing HIV transmission among female sex workers (FSWs) and their clients, while also analyzing their effects on the health of the general population. The compartmental model distinguishes between high-risk populations (FSWs and their clients) and low-risk populations (sexually active men and women in the general population), and links prevention efforts in high-risk groups to the evolution of the epidemic in the low-risk population. The fundamental properties of the model, such as the positivity of solutions and the boundedness of the system, have been verified, and the basic reproduction number R
0
has been calculated. Finally, the stability of the model was studied using Varga’s theorem and the Lyapunov method. Simulation results show that targeted prevention among FSWs and their clients reduces HIV incidence in the general population. This framework provides a valuable tool for guiding policymakers in the design of effective strategies to combat the epidemic, especially relevant in the context of suspension of USAID funding.
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May 13, 2025
Geochemistry distributions and statistics analysis of REE in stream sediments from the watershed west of Mambaka (Adamawa Plateau, Cameroun)
Roland William Edima Yana
,
Lise Carole Okomo Atouba
,
Fagny Aminatou Mefire
,
Oumar Hamit Djiddi
,
Adama Haman
,
Anicet Ango Ella
,
Faarouk Oumarou Nkouandou
World Journal of Geomatics and Geosciences
2025
,
4(1),
12-28.
DOI:
10.31586/wjgg.2025.6101
Views
347
Downloads
51
Abstract
The Mambaka watershed is extends between latitudes 1 3°45'E and 14°15'E and longitudes 7°16'N and 6°45'N. The geology, various tectonic and structural events that have affected the Adamawa Plateau in Cameroon make it rich in multi-substance mining. The objective of this study is to map rare earth (REE) geochemical anomalies in the sediments of the watershed streams west of Mambaka, and to trace
[...] Read more.
The Mambaka watershed is extends between latitudes 1 3°45'E and 14°15'E and longitudes 7°16'N and 6°45'N. The geology, various tectonic and structural events that have affected the Adamawa Plateau in Cameroon make it rich in multi-substance mining. The objective of this study is to map rare earth (REE) geochemical anomalies in the sediments of the watershed streams west of Mambaka, and to trace their origins and geochemical processes. Predictive maps from inverse distance interpolations (IDW), factor analysis (F1) or principal component analysis (PCA) and hierarchical bottom-up classification maps provided a better understanding of the central tendency, distribution and dispersion of REE in the samples and in the study area, based on standard deviation and variance values that generated two factors F1 (Ho-Tm-Er-Yb-Lu-Dy-Tb-Gd-Eu-Sm) and F2 (Pr-Nd-Ce-La-Sm) representing 92.44% of the total cumulative variance. The ratios Ce/Ce* > 0.78 and Eu/Eu* > 1 demonstrate positive anomalies in Ce and Eu, and clear differentiation. The normalized concentrations used to calculate fractionation ratios show that the values for LaN/YbN (0.58 to 1.34), LaN/SmN (0.61 to 0.88) and LaN/LuN (0.62 to 1.43) suggest higher fractionation in SS09 and lower fractionation in SS01. Similarly, the ratios La/Lu (61.71 to 143.46), La/Yb (9.00 to 20.72), La/Sm (4.02 to 5.83) and La/ Lu (61.71 to 143.46) confirm these higher ratios in SS09 and lower in SS01. The REE in the study area comes from hydrothermal processes based on high lineament densities at sampling points in igneous rocks with a mean ∑REE value of between 174-219 ppm.
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December 03, 2024
Diabetes Nursing Education Its Implication Towards an Improved Quality of Life of Persons with Diabetes: A Systematic Review
Cherdel Marie T. Carrera
,
Cliff Richard T. Mabasa
,
Reggie Mae D. Jasmin
,
Dennis B. Brosola
,
Marijane V. Anacito
,
Melba C. Palcon
,
Mila C. Herrera
,
Vito D. Paje III
World Journal of Nursing Research
2024
,
3(1),
86-97.
DOI:
10.31586/wjnr.2024.1142
Views
2012
Downloads
275
Abstract
Background:
Diabetes is a chronic global health issue that requires effective management to improve patient outcomes and quality of life. Nursing education plays a critical role in empowering diabetic patients with self-management skills. Aim This systematic review evaluates the impact of diabetes-focused nursing education on patient outcomes and quality of life.
Methods:
This study
[...] Read more.
Background:
Diabetes is a chronic global health issue that requires effective management to improve patient outcomes and quality of life. Nursing education plays a critical role in empowering diabetic patients with self-management skills. Aim This systematic review evaluates the impact of diabetes-focused nursing education on patient outcomes and quality of life.
Methods:
This study uses PRISMA guidelines and a systematic approach to identify and evaluate relevant literature.
Results and Discussion:
Among the 14 studies reviewed, eight emphasized self-management education, while four incorporated multidisciplinary approaches. Findings consistently demonstrated that structured nursing education programs significantly improved self-management behaviors, glycemic control, and patient knowledge. For instance, nurse-led self-management programs resulted in substantial enhancements in self-care skills and diabetes-related knowledge. Moreover, interventions that combined health education with psychological support were particularly effective, leading to better blood glucose control and increased adherence to treatment. Studies that examined quality of life reported reductions in anxiety, improved lifestyle habits, and better overall self-management. These findings highlight the multifaceted benefits of nursing education, suggesting that structured, supportive programs positively impact both clinical and psychological aspects of diabetes care.
Conclusion:
The review emphasizes the value of comprehensive nursing education that integrates both clinical guidance and psychological support for holistic diabetes management.
Implications
: Ongoing professional development and culturally sensitive education programs are recommended to address the diverse needs of diabetic patients. Future research should investigate the long-term effects of nursing education and explore innovative strategies to enhance diabetes management outcomes.
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Open Access
November 27, 2023
Physico-chemical and sensory characterization of bread based on green banana
(Musa
spp.)
flour
Abel Alberto Massingue Júnior
,
Angélica Agostinho Machalela
,
Felícia Natalino Djedje
,
Rafael Francisco Nanelo
Universal Journal of Food Science and Technology
2023
,
1(1),
56-70.
DOI:
10.31586/ujfst.2023.817
Views
1839
Downloads
250
Abstract
The banana (
Musa spp.
[...] Read more.
The banana (
Musa spp.
) is a tropical fruit with excellent sensory characteristics in terms of aroma, flavor and texture, consumed worldwide and exploited in most tropical countries. Green banana flour is rich in flavonoids, which protect the gastric mucosa, has a high content of resistant starch, which acts in the body as a dietary fiber and thus has health benefits, and is an alternative option for bakery products, reducing waste of both the peel and the pulp. The aim of this study was to develop bread formulations with partial substitution of wheat flour with green banana flour (FBV), thus increasing the nutritional, technological and sensory value. 4 formulations, (A), standard sample; (B), bread with 10% FBV; (C), bread with 15% FBV and (D), bread with 20% FBV. Physico-chemical quality was assessed in terms of moisture content by drying at 105ºC, ash by incineration, fat by the Soxhlet method, protein by the biuret method, carbohydrates by difference calculation and calorific value by sum calculation and sensory analysis by affective methods. The data was evaluated using the RStudio 4.2.1 DCC statistical package. There were no significant differences in moisture content, lipids and calorific value. Differences were evident in the ash and protein content. Sensory acceptance of the standard formulation was 82.22%. The results obtained show that green banana flour can be used as a partial substitute for wheat flour to produce breads with functional properties.
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October 13, 2023
A Report of Three Cases with Moderate Psoriasis Treated with New Topical Treatment
José Miguel Ingelmo Calvo
,
José Ruiz Cobo
,
Mohamed Farouk Allam
Global Journal of Medical Case Reports
2023
,
3(1),
16-20.
DOI:
10.31586/gjmcr.2023.714
Views
1013
Downloads
170
Abstract
Practice guidelines recommend fixed combinations of calcipotriol, a topical vitamin D analogue, and betamethasone dipropionate, a high potency corticosteroid, as first line topical treatment for mild to moderate plaque psoriasis of the body and scalp. A new foaming lotion for treatment of Psoriasis was developed and patented by the Spanish Ministry of Industry, Trade and Tourism (Invention patent
[...] Read more.
Practice guidelines recommend fixed combinations of calcipotriol, a topical vitamin D analogue, and betamethasone dipropionate, a high potency corticosteroid, as first line topical treatment for mild to moderate plaque psoriasis of the body and scalp. A new foaming lotion for treatment of Psoriasis was developed and patented by the Spanish Ministry of Industry, Trade and Tourism (Invention patent reference number 202030824). The foaming lotion is composed of clobetasol, papaverine hydrochloride, spironolactone, milk-peptide-complex and propylene glycol. Three cases with moderate Psoriasis aged 34, 36 and 66 years old were treated with our new foaming lotion for 7-8 days. The three patients reported important improvement in the itching sensations and remission of the scaled lesions. Before and after application of the new foaming lotion, Psoriasis Area Severity Index (PASI) scores improved in the first patient from 24.3 to 1.8, in the second patient from 26.1 to 1.8, and in the third patient from 27 to 1.8. Our results show the short-term effectiveness of the new foaming lotion in treating moderate and extensive Psoriasis. Long follow-up is needed to evaluate the remission period of Psoriasis and possible side effects of the new topical treatment.
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Open Access
July 06, 2023
Health condition of palm trees of Mexico City, with an emphasis on “crowns”
Luz de Lourdes Saavedra-Romero
,
Dionicio Alvarado-Rosales
,
Alejandra Almaraz-Sánchez
,
Andrés Quezada-Salinas
,
Silvia Edith García-Díaz
,
Sergio Aranda-Ocampo
,
Carlos Fredy Ortiz-García
,
Armando Equihua-Martínez
,
José Abel López-Buenfil
Open Journal of Agricultural Research
2023
,
3(1),
12-27.
DOI:
10.31586/ojar.2023.690
Views
1641
Downloads
240
Abstract
The government of Mexico City carried out the introduction of palm trees in the 50s to increase the visual appearance of the main avenues. As a result of introduction of these exotic species, phytosanitary problems appeared. Currently there is scarce information on how to evaluate the health of these majestic monocots, in this sense, it is necessary to implement assessment scales to determine the
[...] Read more.
The government of Mexico City carried out the introduction of palm trees in the 50s to increase the visual appearance of the main avenues. As a result of introduction of these exotic species, phytosanitary problems appeared. Currently there is scarce information on how to evaluate the health of these majestic monocots, in this sense, it is necessary to implement assessment scales to determine the health condition of the most frequently found species to advance on their care and management. The present study had the following objectives: 1) To determine the current state of health of palm trees by means of a scale of visual evaluation of the crown; 2) To know the diversity and structural characteristics of palm trees and 3) To determine the influence of composite variables on the ecosystem services such as the amount of shade provided. Health of palm trees were evaluated two times (dry and rainy seasons in 2022) on 35 transects of 200 m length. An imaginary circle divided into twelfths was overlapped on palm tree “crowns”, and through it, two absolute variables, Live Crown Ratio (LCR) and Crown Quality (CQ) were evaluated. Composite variables were also calculated. The 12/12 health scale adapted in the present study was useful. Four health categories were obtained for the Live crown ratio (LCR): 7.62% of the palm trees were in critical condition, 7.80% were in intermediate condition, 80.36% were in normal condition, and 4.20% were in excellent condition. Meanwhile, for crown quality (CQ), the percentages were 13.50%, 20.00%, 56.96% and 0.43%, respectively. The total height and “crown” diameter showed a positive correlation with the volume composite variables. The shadow area projected as an important ecosystem service increased as the health of the palm trees improved. This is the first study on palm trees health assessment in Mexico City.
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February 09, 2023
Two-Mode Sub harmonic Generator Coupled to Thermal Reservoir
Negasa Belay
Universal Journal of Physics Research
2023
,
2(1),
19-37.
DOI:
10.31586/ujpr.2023.564
Views
527
Downloads
481
Abstract
In this article, our investigation to study squeezing and statistical properties of the light by a two mode sub harmonic generator coupled to thermal reservoir via a single port-mirror. The equation of motion answers are then used to calculate the mean photon number, photon number variance, and quadrature variance for two mode cavity light. However, we have found that the degree of squeezing is
[...] Read more.
In this article, our investigation to study squeezing and statistical properties of the light by a two mode sub harmonic generator coupled to thermal reservoir via a single port-mirror. The equation of motion answers are then used to calculate the mean photon number, photon number variance, and quadrature variance for two mode cavity light. However, we have found that the degree of squeezing is indeed affected by the present of thermal light. The mean photon number of the system under consideration increases with increasing
n
-
.
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Open Access
February 08, 2023
Entangled Photon Generation from a Three-Level Laser with a Parametric Amplifier and Coupled to a Thermal Reservoir
Negasa Belay
Universal Journal of Physics Research
2023
,
2(1),
1-18.
DOI:
10.31586/ujpr.2023.507
Views
442
Downloads
205
Abstract
In this article the investigation of squeezing and statistical properties of light resulting by a non-degenerate three-level laser with the parametric amplifier and coupled to a thermal reservoir have been occurred. With the aid of master equation, stochastic differential equations were obtained. Applying solutions of resulting differential equations, quadrature variance, the mean and variance of
[...] Read more.
In this article the investigation of squeezing and statistical properties of light resulting by a non-degenerate three-level laser with the parametric amplifier and coupled to a thermal reservoir have been occurred. With the aid of master equation, stochastic differential equations were obtained. Applying solutions of resulting differential equations, quadrature variance, the mean and variance of photon number, the photon number correlation are calculated. However, the two-mode driving light has no effect on the squeezing properties of the cavity modes. On the other hand, parametric amplifier and thermal reservoir increase the mean and variance of photon number. Furthermore, employing the same solutions, we also obtain anti normally ordered characteristic function defined in the Heisenberg picture. For a linear gain coefficient of (A = 100), for a cavity damping constant of K= 0:8, µ = 0 and for thermal reservoir th = 0, the maximum intra cavity photon entanglement is found at steady state and at threshold to be 60%.
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November 24, 2022
Contribution to the Ethnobotanical Knowledge of Serre Calabre (Southern Italy)
Chiara Gentile
,
Giovanni Spampinato
,
Miriam Patti
,
Valentina Lucia Astrid Laface
,
Carmelo Maria Musarella
Research Journal of Ecology and Environmental Sciences
2022
,
2(3),
35-55.
DOI:
10.31586/rjees.2022.389
Views
812
Downloads
231
Abstract
This work presents the results of an ethnobotanical research carried out in the territory of Serre Calabre, province of Vibo Valentia (Calabria, southern Italy). In this territory, the bond between the residents and the rural environment is still strong, because the small urban centers are placed in a predominantly agricultural and forestry environment still managed in a traditional way. The
[...] Read more.
This work presents the results of an ethnobotanical research carried out in the territory of Serre Calabre, province of Vibo Valentia (Calabria, southern Italy). In this territory, the bond between the residents and the rural environment is still strong, because the small urban centers are placed in a predominantly agricultural and forestry environment still managed in a traditional way. The survey took place between January 2019 and July 2021. Data were collected through semi-structured interviews with locals. As many as 17 informants were interviewed and a total of 185 interviews were recorded. Plant specimens were collected under the indication of the informants and then deposited at the herbarium of the Mediterranean University of Reggio Calabria (REGGIO). The data were stored on a digital database and then statistically analyzed some synthetic indexes have also been calculated, such as Relative Frequency of Citation (RFC) and the Cultural Importance Index (CI). The investigation allowed to identify 84 taxa belonging to 39 different families, among which the most represented are Lamiaceae (23 interviews, 9 taxa), Asteraceae (22 interviews, 12 taxa). The identified taxa were prevalently cited for alimentary (46 interviews, 32 taxa) and healing (55, 27) uses. The results obtained show how the traditional knowledge about plants in the Serre Calabre area is still alive, however it is exclusive heritage of elderly people and often only in one or just a few informants. In fact, many practices are no longer in use and will not be transferred to the new generations.
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November 24, 2022
Relativistic Radial Density Theory (RRDT)
Branko Novakovic
Universal Journal of Physics Research
2022
,
1(1),
77-87.
DOI:
10.31586/ujpr.2022.500
Views
354
Downloads
151
Abstract
Starting with Planck scale it is developed the Relativistic Radial Density Theory (
RRDT
). In this theory, the Planck and gravitational parameters can be described as the functions of the radial mass (energy) density value. This density is maximal at the minimal radius and minimal at the maximal radius. This conclusion is based on the fact that the ratio of Planck mass and Planck length (radius) is constant. These radiuses can be described as the function of the energy conservation constant
κ
. Using
RRD
T
, it is possible to develop the connections between Planck’s and gravitational parameters as function of the maximal and minimal radial mass (energy) density values. In that sense, the gravitational length, time, energy and temperature can be presented as the function of the Planck length, time, energy and temperature, respectively. This opens possibility to merge of Quantum Field Theory (
QFT
) and the General Theory of Relativity (
GTR
) at the quantum scale in gravitational field. The existence of the maximal radial mass (energy) density value at the minimal radius in gravitational field means that no singularity in that field. Further, the existence of the minimal radial mass (energy) density value at the maximal radius in gravitational field means that no infinity in that field. It follows the postulation: the most minimal radius in a gravitational field belongs to the minimal mass (energy). Since the Planck mass is not the minimal mass in space-time, the Planck length/radius is not the minimal length/radius in the space-time. If the calculated minimal (or maximal) radius is the bigger than the related official radius it means that there exists a dark matter in this object. In that sense, the black holes are presenting the state of the matter at the minimal radius where we have the maximal radial mass (energy) density value. Further, the maximal possible radius of the matter is presenting the state with the minimal radial mass (energy) density value. Thus, the maximal and minimal radial mass (energy) density values are constants and conserved items. Now the question is: do motion of the Universe follows the
RRD
T
[...] Read more.
Starting with Planck scale it is developed the Relativistic Radial Density Theory (
RRDT
). In this theory, the Planck and gravitational parameters can be described as the functions of the radial mass (energy) density value. This density is maximal at the minimal radius and minimal at the maximal radius. This conclusion is based on the fact that the ratio of Planck mass and Planck length (radius) is constant. These radiuses can be described as the function of the energy conservation constant
κ
. Using
RRD
T
, it is possible to develop the connections between Planck’s and gravitational parameters as function of the maximal and minimal radial mass (energy) density values. In that sense, the gravitational length, time, energy and temperature can be presented as the function of the Planck length, time, energy and temperature, respectively. This opens possibility to merge of Quantum Field Theory (
QFT
) and the General Theory of Relativity (
GTR
) at the quantum scale in gravitational field. The existence of the maximal radial mass (energy) density value at the minimal radius in gravitational field means that no singularity in that field. Further, the existence of the minimal radial mass (energy) density value at the maximal radius in gravitational field means that no infinity in that field. It follows the postulation: the most minimal radius in a gravitational field belongs to the minimal mass (energy). Since the Planck mass is not the minimal mass in space-time, the Planck length/radius is not the minimal length/radius in the space-time. If the calculated minimal (or maximal) radius is the bigger than the related official radius it means that there exists a dark matter in this object. In that sense, the black holes are presenting the state of the matter at the minimal radius where we have the maximal radial mass (energy) density value. Further, the maximal possible radius of the matter is presenting the state with the minimal radial mass (energy) density value. Thus, the maximal and minimal radial mass (energy) density values are constants and conserved items. Now the question is: do motion of the Universe follows the
RRD
T
?
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October 29, 2022
Measurement of conversion factor into mean glandular dose in mammography using OSL dosimeters
Yasuki Asada
,
Honoka Inagaki
,
Kaito Iwase
,
Mio Taniguchi
,
Yuya Nagake
,
Miuna Hayashi
Open Journal of Medical Sciences
2022
,
2(1),
9-16.
DOI:
10.31586/ojms.2022.432
Views
933
Downloads
205
Abstract
Background:
Currently, the DRL quantity in mammography are evaluated in terms of mean glandular dose (MGD). Since the MGD cannot be measured directly, it can be obtained by calculation using the equation (D=K*g*c*s). In previous studies, the conversion factor g was calculated by Monte Carlo simulation and is not reported from actual measurements. In this study, we focused on the
[...] Read more.
Background:
Currently, the DRL quantity in mammography are evaluated in terms of mean glandular dose (MGD). Since the MGD cannot be measured directly, it can be obtained by calculation using the equation (D=K*g*c*s). In previous studies, the conversion factor g was calculated by Monte Carlo simulation and is not reported from actual measurements. In this study, we focused on the g-factor, which is a conversion factor to the MGD at 50% glandularity, and attempted to measure it using a nanoDot dosimeter to see if it can be used in mammography.
Methods:
The nanoDot dosimeters were inserted in a PMMA phantom at depths ranging from 0 cm to 6 cm in 1 cm increments, and measurements were made in three HVLs of 0.3 mmAl, 0.35 mmAl, and 0.4 mmAl HVL. The g-factor was calculated from the nanoDot dosimeter values using a conversion equation.
Results and Discussion:
The measured g-factors for all the HVLs were in close agreement with those of Dance et al. The values of the previous studies did not include the backscatter factor, which may have underestimated the MGD. The difference was smaller for the 0.4 mm Al. Compared to the other HVLs, the 0.4 mm Al was measured without a compression plate, which may have been influenced by the presence or absence of a compression plate.
Conclusion:
The nanoDot dosimeters were used to calculate g-factors. The results agreed with those of previous studies within uncertainty. This indicates that nanoDot dosimeters can be used in the mammography field.
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October 15, 2022
Prognostic Value and Biological Significance of GUCY1A2 in Gastric Cancer: A Bioinformatics Analysis Base on TCGA Database
Min Wei
,
Shan Huang
,
Mengyuan Zhu
,
Xiaofen Pan
World Journal of Cancer and Oncology Research
2022
,
1(1),
19-28.
DOI:
10.31586/wjcor.2022.412
Views
446
Downloads
147
Abstract
Background.
Guanylate cyclase 1 soluble subunit alpha 2 (
sGC
α2
), also known as
GUCY1A2
, was reported to be upregulated and promoted tumorigenesis in cervical cancer. But whether
GUCY1A2
was abnormally expressed and its prognostic value in gastric cancer was unknown. The current study aimed to find out the prognostic value of
GUCY1A2
in gastric cancer by analyzing data from The Cancer Genome Atlas (TCGA) database.
Methods.
Wilcoxon signed-rank test, cox regression analysis and multivariant analysis were used to analyze the relationship between clinical characteristic and
GUCY1A2
expression level. Kaplan-Meier method was used to analyze the association of
GUCY1A2
and overall survival. Gene set enrichment analysis (GSEA) was used to identify
GUCY1A2
-related signaling pathway.
Results.
Compared to normal tissue, expression of
GUCY1A2
was significantly increased in gastric cancer (p<0.001). Increased
GUCY1A2
was associated with advanced T stage (p=0.012) and poor survival (p=0.022). Univariate analysis showed that high
GUCY1A2
expression was associated with a poor overall survival (HR:1.44, 95% confidence interval [CI]: 1.03-2.02, p=0.03). Multivariate analysis indicated that
GUCY1A3
remained an independent prognostic predictor of overall survival (HR:1.75, 95% confidence interval [CI]: 1.20-2.56, p=0.00). GSEA revealed that calcium signaling pathway,
MAPK
signaling pathway,
TGF-β
signaling pathway and
Wnt
signaling pathway were enriched in
GUCY1A2
high expression phenotype.
Conclusions.
GUCY1A2
[...] Read more.
Background.
Guanylate cyclase 1 soluble subunit alpha 2 (
sGC
α2
), also known as
GUCY1A2
, was reported to be upregulated and promoted tumorigenesis in cervical cancer. But whether
GUCY1A2
was abnormally expressed and its prognostic value in gastric cancer was unknown. The current study aimed to find out the prognostic value of
GUCY1A2
in gastric cancer by analyzing data from The Cancer Genome Atlas (TCGA) database.
Methods.
Wilcoxon signed-rank test, cox regression analysis and multivariant analysis were used to analyze the relationship between clinical characteristic and
GUCY1A2
expression level. Kaplan-Meier method was used to analyze the association of
GUCY1A2
and overall survival. Gene set enrichment analysis (GSEA) was used to identify
GUCY1A2
-related signaling pathway.
Results.
Compared to normal tissue, expression of
GUCY1A2
was significantly increased in gastric cancer (p<0.001). Increased
GUCY1A2
was associated with advanced T stage (p=0.012) and poor survival (p=0.022). Univariate analysis showed that high
GUCY1A2
expression was associated with a poor overall survival (HR:1.44, 95% confidence interval [CI]: 1.03-2.02, p=0.03). Multivariate analysis indicated that
GUCY1A3
remained an independent prognostic predictor of overall survival (HR:1.75, 95% confidence interval [CI]: 1.20-2.56, p=0.00). GSEA revealed that calcium signaling pathway,
MAPK
signaling pathway,
TGF-β
signaling pathway and
Wnt
signaling pathway were enriched in
GUCY1A2
high expression phenotype.
Conclusions.
GUCY1A2
maybe a potential prognostic predictor of poor survival in gastric cancer. But it need to be further validated clinically.
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October 09, 2022
New Approach to Statistical Analysis of Election Results
Ivan H. Krykun
International Journal of Mathematical, Engineering, Biological and Applied Computing
2022
,
1(2),
68-76.
DOI:
10.31586/ijmebac.2022.466
Views
972
Downloads
219
Abstract
In this paper, a new method of detection of election fraud is proposed. This method is based on the calculation of the ratio of two standard normal random variables; estimation of parameters of obtained sample and comparison of these estimates with known theoretical values of parameters. Also in the paper, there is an example of the application of the described method.
In this paper, a new method of detection of election fraud is proposed. This method is based on the calculation of the ratio of two standard normal random variables; estimation of parameters of obtained sample and comparison of these estimates with known theoretical values of parameters. Also in the paper, there is an example of the application of the described method.
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September 20, 2022
High Radio Frequencies interaction of Composite Materials Using Rectangular Waveguide
Safer Omar Adib
,
Bensaid Samir
Online Journal of Materials Science
2022
,
1(1),
52-64.
DOI:
10.31586/materials.2022.416
Views
830
Downloads
200
Abstract
The main goal of this paper is studying the composite material behavior under microwave which they used in antennas reflectors. For that, a transmission line method based on X- band WR90 rectangular waveguide is used. The Bi-anisotropic electrical properties are defined as tensors in finite element model. The fibers of the single layer composite are oriented in different directions. The
[...] Read more.
The main goal of this paper is studying the composite material behavior under microwave which they used in antennas reflectors. For that, a transmission line method based on X- band WR90 rectangular waveguide is used. The Bi-anisotropic electrical properties are defined as tensors in finite element model. The fibers of the single layer composite are oriented in different directions. The S-parameters (S11 and S12) are calculated using COMSOL Multiyphysics, the S-parameters and currents density behavior show that they very affected by the orientations of the fibers which mean must be considered in any design of RF equipments, more the fibers are parallel with the electrical field more the reflection coefficient get higher.
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Figure 1 (a)
Figure 1 (b)
Figure 1 (c)
Figure 1 (d)
Figure 2
Figure 3
Figure 4
Figure 5 (a)
Figure 5 (b)
Figure 5 (c)
Figure 6 (a)
Figure 6 (b)
Figure 6 (c)
Figure 7
Figure 8
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Review Article
Open Access
September 01, 2022
Public Perspective on the Negative Impacts of Substance Use-Related Social Media Content on Adolescents: A Survey
Stevie A. Burke
,
Alayne Mahoney
,
Ammara Akhtar
,
Allen Hammer
Open Journal of Psychology
2022
,
2(2),
77-83.
DOI:
10.31586/ojp.2022.378
Views
1568
Downloads
340
Abstract
Despite the pervasive nature of internet use among adolescents and young adults, there is not enough knowledge about whether and how involvement in social media influences substance use patterns and the risk of drug use-related problems. This study was conducted to examine the complex relationship between substance use-related social media engagement (viewing, liking, commenting, and posting the
[...] Read more.
Despite the pervasive nature of internet use among adolescents and young adults, there is not enough knowledge about whether and how involvement in social media influences substance use patterns and the risk of drug use-related problems. This study was conducted to examine the complex relationship between substance use-related social media engagement (viewing, liking, commenting, and posting the substance use-related social media content) and the drug use-related problem in adolescents from public perception. We surveyed to determine the perception of social media users regarding the association between substance use-related social media content and substance/drug abuse problems. An anonymous online questionnaire was conducted to collect the response from each participant. The response was generated after collecting the data from 126 users of mixed ages. The data was stringently analyzed, and the response was displayed in the form of bar charts. The primary findings indicated a significant relationship between drug/alcohol-related social media engagement and drug/alcohol-related problems. From public perception, a positive correlation was found between the engagement in the drug use-related content and drug use associated problems. However, further research is needed to determine the right direction of these associations that can provide substantiative solutions for numerous interventions aiming to prevent drug use-related adverse consequences.
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Open Access
August 31, 2022
Extended Rule of Five and Prediction of Biological Activity of peptidic HIV-1-PR Inhibitors
Vishnu Kumar Sahu
,
Rajesh Kumar Singh
,
Pashupati Prasad Singh
Universal Journal of Pharmacy and Pharmacology
2022
,
1(1),
20-42.
DOI:
10.31586/ujpp.2022.403
Views
2028
Downloads
334
Abstract
In this research work, we have applied “Lipinski’s RO5” for pharmacokinetics (PK) study and to predict the activity of peptidic HIV-1 protease inhibitors. Peptidic HIV-1-PRIs have been taken from literature with their observed biological activities (OBAs) in term of IC50. The logarithms of the inverse of IC50 have been used as biological end point o(log1/C) in the study. For calculation of
[...] Read more.
In this research work, we have applied “Lipinski’s RO5” for pharmacokinetics (PK) study and to predict the activity of peptidic HIV-1 protease inhibitors. Peptidic HIV-1-PRIs have been taken from literature with their observed biological activities (OBAs) in term of IC50. The logarithms of the inverse of IC50 have been used as biological end point o(log1/C) in the study. For calculation of physicochemical parameters, the molecular modeling and geometry optimization of all the derivatives have been carried out with CAChe Pro software using semiempirical PM3 method. Prediction of the biological activity of the inhibitors has shown that the best QSAR model is constructed from pharmacokinetic properties, molecular weight and hydrogen bond acceptor. This also proved that these properties play important role to describe the PKs of the drugs. On the basis of the derived models one can build up a theoretical basis to access the biological activity of the compounds of the same series.
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August 20, 2022
Nursing Student Engagement with Their Learning: A Mixed Methods Study
Malcolm Elliott
,
Peter McErlain
World Journal of Nursing Research
2022
,
1(1),
21-37.
DOI:
10.31586/wjnr.2022.385
Views
2147
Downloads
325
Abstract
Student engagement in educational activities is essential for achieving desired learning outcomes. Despite this, little is known about the engagement patterns of nursing students from diverse or disadvantaged backgrounds. A mixed method study was conducted to explore engagement patterns within and outside the classroom but not during clinical placements. Students were asked what engagement means
[...] Read more.
Student engagement in educational activities is essential for achieving desired learning outcomes. Despite this, little is known about the engagement patterns of nursing students from diverse or disadvantaged backgrounds. A mixed method study was conducted to explore engagement patterns within and outside the classroom but not during clinical placements. Students were asked what engagement means to them and what influences their engagement. Students were also asked how many hours they engaged in each of their undergraduate subjects and the reasons for this. The study was conducted at an Australian education provider. All students (n = 240) enrolled in the Bachelor of Nursing course were invited to participate. Lecture attendance was high at the start of the semester, fluctuated weekly and declined as the semester progressed. Students averaged between 3.5 and 4.4 hours of engagement per subject per week. They defined engagement as actually coming to class and a commitment to learning. Students were engaged by new, interesting content and disengaged by repetitive or complex content and poor tutoring. Most students want to engage but are distracted by intrinsic and extrinsic factors. Research should explore how to best assess students without the concurrent academic workload interfering with their studies.
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December 10, 2021
A Moving Single-Station Doppler Ranging Solution by Means of Direction Finding Method
Tao Yu
World Journal of Electrical and Electronic Engineering
2022
,
2(1),
1-10.
DOI:
10.31586/wjeee.2022.174
Views
2373
Downloads
314
Abstract
The Doppler shift is an angle dependent function. Based on the relationship between frequency shift and angle, direction-finding method can be used directly to obtain the ranging solution based on frequency shift measurement. The Doppler ranging solution obtained by this method has excellent calculation accuracy and can keep the same accuracy as the ranging solution based on frequency shift
[...] Read more.
The Doppler shift is an angle dependent function. Based on the relationship between frequency shift and angle, direction-finding method can be used directly to obtain the ranging solution based on frequency shift measurement. The Doppler ranging solution obtained by this method has excellent calculation accuracy and can keep the same accuracy as the ranging solution based on frequency shift difference processing.
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