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Factors Associated with Voluntary Cosmetic Depigmentation in Schools in the Collines Department (Benin)

Journal of Cosmetics, Dermatological Sciences and Applications 2024年第2期14卷 174-187页

作者： bayédjè e.rard koutchoro Georgia Damien Barikissou Coovi Nonwanou Ignace Tokpanoude elvire Sègnon eurydice djossou Idohou Olakounlé Sarafath Christiane Koudoukpo Aguemon Badirou Unity of Public Health Faculty of Health Sciences University of Abomey-Calavi Abomey-Calavi Benin Department of Public Health Teaching and Research Unit in Community Health and Epidemiology Faculty of Health Sciences University of Abomey-Calavi Abomey-Calavi Benin Dermatology Department Departmental University Hospital Center of Borgou and Alibori Parakou Benin

Skin depigmentation is a worrying practice that is gaining popularity, particularly among young girls. However, this practice poses health risks. It also reflects a negative view of black skin color. This was a cross-sectional study carried out between April and May 2023 which involved 1039 female students from schools and universities in the Collines department selected by stratified sampling. Data was collected during a face-to-face interview using a questionnaire providing information on the demographic, socio-cultural, and economic characteristics of the girls. The depigmentation products used were identified as well as the complications caused by the use of these products. Statistical analysis made it possible to calculate the frequencies and logistic regression made it possible to identify the factors associated with depigmentation. The prevalence of depigmentation among the girls surveyed was 78.2%. The main products used were soaps based on mercurial derivative and hydroquinone (21.6%) and lotions based on hydroquinone and corticosteroids (75.7%). The factors associated with the practice of depigmentation were the ethnicity of the respondents (OR = 2.52;95% CI = [0.47 - 13.33], p = 0.001);the average monthly income of the parents (OR = 3.26;95% CI = [1.71 - 6.09], p = 0.003);the opinion of the respondents on depigmentation (OR = 2.48;95% CI = [0.84 - 7.3], p e value given to light skin versus black skin (OR = 3.41;95% CI = [2.32 - 5.01], p e prevalence of depigmentation among the girls surveyed is high. Consequently, reinforced awareness measures and stricter control of bleaching products are imperative to address this high prevalence of the phenomenon.

关键词： Voluntary Depigmentation Cosmetic Depigmentation Factors Associated Students Collines Department Benin

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Sonoluminescence and the probability of isothermal bubble collapse

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Nuclear Science and Techniques 1997年第4期8卷 236-238页

作者： Thomas V Prevenslik ( 2e Greenery Court, Discovery bay, Hong Kong) 2eGreeneryCourt DiscoveryBayHongKong

ＳｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅａｎｄｔｈｅｐｒｏｂａｂｉｌｉｔｙｏｆｉｓｏｔｈｅｒｍａｌｂｕｂｂｌｅｃｏｌａｐｓｅＴｈｏｍａｓＶＰｒｅｖｅｎｓｌｉｋ（２ＥＧｒｅｎｅｒｙＣｏｕｒｔ，ＤｉｓｃｏｖｅｒｙＢａｙ，Ｈｏｎｇ... 详细信息

ＳｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅａｎｄｔｈｅｐｒｏｂａｂｉｌｉｔｙｏｆｉｓｏｔｈｅｒｍａｌｂｕｂｂｌｅｃｏｌａｐｓｅＴｈｏｍａｓＶＰｒｅｖｅｎｓｌｉｋ（２ＥＧｒｅｎｅｒｙＣｏｕｒｔ，ＤｉｓｃｏｖｅｒｙＢａｙ，ＨｏｎｇＫｏｎｇ）ＡｂｓｔｒａｃｔＣｏｍｐ...

关键词：冷聚变声致发光等温泡消失

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ULTRASOUND INDUCeD AND LASeR eNHANCeD COLD FUSION CHeMISTRY

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Nuclear Science and Techniques 1995年第4期6卷 198-203页

作者： T. V. Prevenslik (2/e Greenery Court, Discovery bay, Hong Kong)

The standard model of sonoluminescence suggests that the Coulomb barrier to deuterium fusion may be overcome by high bubble gas temperatures caused by compression heating if the bubble diameter remains spherical during bubble ***, in the more likely collapse geometry of a pancake shape, the temperature rise in the bubbles is negligible. But the collapsing pancake bubble is found to significantly increase the frequency of the infrared energy available in the vibrational state of the water molecules at ambient temperature. For a collapse to liquid density, ultraviolet radiation at about 10eV is found. Although the ultraviolet radiation is of a low intensity, higher intensities may be possible if the bubble collapse is enhanced by visible and infrared lasers. Neither hot nor cold fusion is predicted in bubble collapse,but the ultraviolet energy at about 10eV developed in the bubble is sufficient to provide the basis for a new field of chemistry called ultrasound induced and laser enhanced cold fusion chemistry.

关键词： Cold fusion Ultrasound Ultraviolet Theory

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Factors Associated with Overweight among Workers of the Ministry of Labor and Public Service in Benin in 2023

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Open Journal of Internal Medicine 2024年第3期14卷 299-318页

作者： Lucile T. S. Bedie Toïhen Géraud Padonou Charles Jérôme Sossa bayédjè e.rard koutchoro Sègnon eurydice elvire djossou Coovi Nonwanou Ignace Tokpanoude Badirou Aguemon Ministry of Labor and Public Service Cotonou Benin Faculty of Health Sciences (FSS) University of Abomey-Calavi (UAC) Cotonou Benin Health Promotion Department Regional Institute of Public Health Ouidah Benin

Introduction: The problem of excess weight is pandemic and affects the majority of nations, regardless of their level of development. However, the prevalence of overweight among workers in Benin is very poorly documented. To fill this gap, the present study aimed to determine the prevalence and factors associated with overweight among workers of the Ministry of Labor and Public Service (MTFP) in 2023 in Benin. Materials and Methods: This is a descriptive cross-sectional study with analytical purposes carried out from August 16 to December 17, 2023, among MINISTRY OF LABOR AND PUBLIC SeRVICe staff. The variables studied were overweight, sociodemographic, occupational and dietary characteristics, lifestyle, anthropometric factors and family history of obesity. An exhaustive recruitment of workers meeting our inclusion criteria and a questionnaire survey was carried out. Data were analyzed using R 4.0.4 software. A bivariate analysis followed by a multivariable analysis made it possible to identify the factors associated with overweight at the p Results: In total, 379 workers were included in our study. The average age of the surveyed workers was 44.86 years ± 7.67 years, with 202 (53.30%) workers at least 45 years old. Men predominated with a number of 228 (60.16%). The prevalence of overweight was 63.32% (95% CI: [58.23 - 68.15]) and the associated factors after multivariate analysis were: female sex (ORa = 4.00;95% CI [2.11 - 7.76];p Conclusion: The prevalence of overweight is high among ministry of labor and public service workers. education and awareness in the professional environment on the prevention and management of risk factors are essential for a long-term impact on a notable regression of this public health phenomenon.

关键词： Overweight Associated Factors Workers-Benin

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Magnetic fields in the Planck theory of sonoluminescence

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Nuclear Science and Techniques 1998年第4期9卷 221-226页

作者： Prevenslik T V (2e Greenery Court, Discovery bay, Hong Kong )

Sonolundnescence (SL) observed in the cavitation of water may be explainedby the Planck theory of SL that treats the bubbles as collapsing miniature masers havingoptical waves standing in resonance with the dimensions of bubble cavity. Microwaves arecreated from the Planck energy of the standing waves provided the bubble wall may be treatedas a perfect blackbody surface. In the ultraviolet, liquid H2O is strongly absorbent and thebubble approaches a Planck blackbody enclosure. The micrwaves are created at frequenciesproportional to the bubble collapse velocity and are absorbed by the dipoles of the H2O andother bubble wall molecules. Intense electric fields develop as the liquid H2O bubble wallundergoes dielectric polarization. By this theory, free electrons are created in SL as the electricfields breakdown; the presence of free electrons is required if any magnetic field effect is to beobserved in SL. Both local and global magnetic effects on SL are described. The local effectis based on the magnetic pressure due to the electrons moving as currents inside the *** global effect is an accumulation of local c’ffects at the voids throughout the liquid H2Ocausing a reduction in the bulk modulus. Numerical solutions of the Rayleigh-Plesset (R-P)equation are presented that show the effect of applied magnetic field on SL to be the globaleffect causing a reduction in the bulk modulus. Consistent with the Planck theory of SL, theR-P simulations show the suppression of SL intensity with magnetic field to be parabolic andthe SL intensity to be linear with collapse velocity.

关键词：声致冷光 Planck理论磁场

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Sonoluminescence and cold fusion

引用

Nuclear Science and Techniques 1996年第1期7卷 1-5页

作者： T V Prevenslik(2e Greenery Court, Discovery bay, Hong Kong)

Ｓｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅａｎｄｃｏｌｄｆｕｓｉｏｎ￥ＴＶＰｒｅｖｅｎｓｌｉｋ（２ＥＧｒｅｅｎｅｒｙＣｏｕｒｔ，ＤｉｓｃｏｖｅｒｙＢａｙ，ＨｏｎｇＫｏｎｇ）Ａｂｓｔｒａｃｔ：Ａｔｈｅｏｒｙｏｆｓｏｎｏｌｕｍｉｎ... 详细信息

Ｓｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅａｎｄｃｏｌｄｆｕｓｉｏｎ￥ＴＶＰｒｅｖｅｎｓｌｉｋ（２ＥＧｒｅｅｎｅｒｙＣｏｕｒｔ，ＤｉｓｃｏｖｅｒｙＢａｙ，ＨｏｎｇＫｏｎｇ）Ａｂｓｔｒａｃｔ：Ａｔｈｅｏｒｙｏｆｓｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅ（ＳＬ）ｐｒｏｐｏｓ...

关键词：冷聚变声致发光 X射线红外线

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Sonoluminescence: an Iraser creating cold fusion neutrons

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Nuclear Science and Techniques 1996年第3期7卷 157-160页

作者： T V Prevenslik(2e Greenery Court, Discovery bay,Hong Kong)

Ｓｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅ：ａｎＩｒａｓｅｒｃｒｅａｔｉｎｇｃｏｌｄｆｕｓｉｏｎｎｅｕｔｒｏｎｓ？ＴＶＰｒｅｖｅｎｓｌｉｋ（２ＥＧｒｅｅｎｅｒｙＣｏｕｒｔ，ＤｉｓｃｏｖｅｒｙＢａｙ，ＨｏｎｇＫｏｎｇ）Ａｂｓｔｒ... 详细信息

Ｓｏｎｏｌｕｍｉｎｅｓｃｅｎｃｅ：ａｎＩｒａｓｅｒｃｒｅａｔｉｎｇｃｏｌｄｆｕｓｉｏｎｎｅｕｔｒｏｎｓ？ＴＶＰｒｅｖｅｎｓｌｉｋ（２ＥＧｒｅｅｎｅｒｙＣｏｕｒｔ，ＤｉｓｃｏｖｅｒｙＢａｙ，ＨｏｎｇＫｏｎｇ）Ａｂｓｔｒａｃｔ：Ｓｏｎｏｌｕｍｉｎｅｓｃｅ...

关键词：冷聚变中子声致发光远紫外激光

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Does the preoperative platelet-tolymphocyte ratio and neutrophil-tolymphocyte ratio predict morbidity after gastrectomy for gastric cancer?

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Military Medical Research 2020年第4期7卷 384-390页

作者： İbrahim Mungan Çilem bayındır Dicle Şerife Bektaş Sema Sarı Serdar Yamanyar MineÇavuş Sema Turan erdal Birol Bostancı Department of Intensive Care Unit Ankara Eğitim ve AraştırmaŞehir Hastanesi06800 AnkaraPATurkey Department of Gastrointestinal Surgery Ankara Eğitim ve AraştırmaŞehir Hastanesi06800 AnkaraPATurkey

Background:Gastric cancer is the 2 nd most common cause of cancer-related deaths,and the morbidity rate after surgery is reported to be as high as 46%.The estimation of possible complications,morbidity,and mortality and the ability to specify patients at high risk have become substantial for an intimate follow-up and for proper management in the intensive care *** study aimed to determine the prognostic value of the preoperative platelet-tolymphocyte ratio(PLR)and neutrophil-to-lymphocyte ratio(NLR)and their relations with clinical outcomes and complications after gastrectomy for gastric ***:This single-center,retrospective cohort study evaluated the data of 292 patients who underwent gastrectomy with curative intent between January 2015 and June 2018 in a tertiary state hospital in Ankara,Turkey.A receiver operating characteristic curve was generated to evaluate the ability of laboratory values to predict clinically relevant postoperative *** area under the curve was computed to compare the predictive power of the NLR and ***,the cutoff points were selected as the stratifying values for the PLR and ***:The area under the curve values of the PLR(0.60,95%CI 0.542–0.657)and NLR(0.556,95%CI 0.497–0.614)were larger than those of the other preoperative laboratory *** the PLR,the diagnostic sensitivity and specificity were 50.00%and 72.22%,respectively,whereas for the NLR,the diagnostic sensitivity and specificity were 37.50%and 80.16%,*** PLR was related to morbidity,whereas the relation of the NLR with mortality was more *** study demonstrated that the PLR and NLR may predict mortality and morbidity via the ClavienDindo classification in gastric cancer *** variable was grade≥3 in the Clavien-Dindo classification,including complications requiring surgical or endoscopic interventions,life-threatening complications,and *** the PLR and NLR differed significantly according to Clavien-D

关键词： Preoperative Platelet-to-lymphocyte ratio Neutrophil-to-lymphocyte ratio Morbidity Gastrectomy Stomach cancer

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Investigation of Color Change of Different Restoration Thickness, Background Color and Resin Cement Shade on CAD/CAM Glass Ceramic Materials

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Open Journal of Stomatology 2023年第4期13卷 143-155页

作者： Özge Sancaktar Funda bayındır Dentopia Dental Clinic Istanbul Türkiye Department of Prosthetic Dentistry Faculty of Dentistry Atatürk University Erzurum Türkiye

The aim of this study is to investigate the color change of different restoration thicknesses, backgrounds and resin cement colors on lithium disilicate and zirconium reinforced lithium silicate materials in vitro. In this study, IPS emax CAD (LT C14) and Celtra Duo (LT C14) are used as full ceramic materials, and Variolink esthetic LC (warm, neutral) used as resin cement and Tokuyama estelite Sigma Quick (A3, A2) is used as composite materials. A total of 160 samples in the form of 40 pieces of 5 × 5 0.4 mm thick 40 pieces of 5 × 5 0.6 mm thick square discs from each of the all-ceramic materials in block form were obtained using a water jet device (DWJ1525-FA;Dardi International Corporation, Nanjing, China). Glass ceramic samples produced in 2 different thicknesses were cemented on 2 different backgrounds with 2 different resin types of cement. Color measurements of the samples before and after cementation were performed on a grey background with spectrophotometer Vita easyShade V (Vita Zahnfabrik, Bad Sackingen, Germany) and color parameters (L*, a*, b*, Δe) were calculated according to the CIe Lab (Commission Internationale de L’eclairage) system. Average values for each group (Δe) were not affected by ceramic type, material thickness, background color, resin cement color, and the interaction of these four variables (p > 0.05). When the triple interactions between the groups were examined, there were no statistically significant differences (p > 0.05). In the evaluation of pairwise interactions between two groups (material type-material thickness, material type-background color, and thickness of material-background interactions) statistically significant differences (p Implications: The material type, thickness, background and cement color used did not cause any statistically significant color change in lithium disilicate and zirconium-reinforced lithium silicate glass ceramic materials (p > 0.05).

关键词： CAD/CAM Color Laminate Veneer Resin Cement

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单独马达传动锭子的初步试验结果

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国外纺织技术 1991年第10期 7-15页

作者： e.bay 蔡智杰

引言纺纱机械的改进不仅产生了一些替代环锭纺的新技术,如转杯纺、喷气纺等,而且也对环锭纺本身进行了改进。而无论何种改进,都是为了满足市场的要求,锭子及其传动系统的改进也不例外,对它的要求有:

关键词：锭子钢丝圈纯棉纺锭纺织机械零部件纺纱三角区锭速纺纱工艺纺纱张力马达钢领直径断头率管纱高速纺纱锭带

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