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Evaluation of the Reproduction Parameters of “Lohmann Brown” Strain chickens Fed with Cajanus cajan Leaf Meal in the Republic of Congo

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open Journal of Animal Sciences 2024年第3期14卷 234-248页

作者： Richard Missoko Mabeki Alexis Jonas ognika Dora chérita Ekou Nathalie Myreille ockoyi Parisse Akouango Laboratory of Animal Production and Biodiversity National School of Agronomy and Forestry Marien Ngouabi University Brazzaville Republic of the Congo Department of Animal Production and Health Marien Ngouabi University Brazzaville Republic of the Congo

The objective of this study was to evaluate the reproductive parameters of “Lohmann Brown” strain chickens fed on Cajanus cajan leaves and to assess the viability of the chicks after hatching. 40 hens of the “Lohmann Brown” strain fed on Cajanus cajan leaf flour laid 219 eggs divided into four batches depending on the rate of incorporation of Cajanus cajan leaf flour in the rations (0%, 5%, 10% and 15%) were trained and introduced into the incubator. Results: the incubator indicates a hatching temperature of 38˚C to 37.2˚C and relative humidity of 60% to 70%. Hatching performance shows that: The 15% batch recorded the highest fertility rate 86.95% compared to 26.88% of the control batch. The CC 15% batch recorded the highest hatching rate 36.87. The lowest rate (17.18%) was recorded in the control batch (CC 0%). The highest embryonic mortality rate was recorded in the CC 15% batch. The lowest rate in the CC 10% batch. Concerning unfertilized eggs, the highest rate is 72.20% (CC 0%), and the lowest are (12.03%;57.42% and 66.66%) recorded in CC batches. 15%, CC 5% and CC 10% respectively. For the shell mortality rate, the highest is 18.58% recorded in the CC 15% batch. The lowest shell mortality rate is 2.07%, obtained in the control batch (CC 0%);the dust mortality rate was 0% for all chicks. The study seems to indicate that the incorporation of Cajanus cajan leaf meal up to 15% into the reproduction type ration in hens does not cause any harmful effects on the reproduction performance of laying hens.

关键词： Egg Incubation Hatching Fertility Mortality Viability

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Effect of radiative loss mechanisms on FIR thermometric parameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.L Silva L.A.o.Nunes S.M.Lima L.H.C.Andrade optical and Photothermal Spectroscopy Group(GEoF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Tech.ology Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physics of São Carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluorescence intensity ratio(FIR)***,at high Nd^(3+)concentrations,energy transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd^(3+)emission,which has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence thermometers,in the temperature range from 299 to 371 *** results indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profiles caused by optical reabsorption of the Nd^(3+)emissions and cross-relaxation processes.A decrease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,which is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluorescence intensity ratio optical thermometry Judd-ofelt Rare earths

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Academic Stress Assessment Using Virtual Reality as an Educational Tool in Spine Surgery

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open Journal of Modern Neurosurgery 2024年第2期14卷 114-123页

作者： Diana chávez Lizárraga Jesús Alberto Pérez Contreras Fernando Alvarado Gómez Evelyn Quintero Medina Emmanuel Cantú chávez Iván Ulises Sámano López Ana Sofía Peña Blesa Department of Neurosurgery ángeles Pedregal Ciudad de México México Department of Traumatology and orthopedics Hospital Santa Fe Bogotá Colombia

Introduction: The evaluation of academic stress in medical students and residents is a topic of significant interest, given the considerable challenges they face during their learning process with traditional teaching methods. The use of tech.ologies like virtual reality presents an opportunity to enhance their skills through simulations and training. The main objective of this study is to qualitatively assess the stress levels experienced by medical students and residents by integrating virtual reality into their current learning methods, aiming to improve their ability to manage stressors in their practice. Material and Methods: A questionnaire was conducted with 12 medical students and 12 Traumatology and orthopedics residents. The purpose of the questionnaire was to evaluate the levels of academic stress using the SISCo inventory. The stress levels were calculated by transforming average values into percentages, and the following criteria were assigned: 0 to 33% for Mild Stress, 34 to 66% for Moderate Stress, and 67 to 100% for Deep Stress. Then, a virtual reality class focused on spine surgery was provided. Both medical students and residents were trained using the Non Nocere SharpSurgeon software platform and oculus Quest 2 virtual reality glasses. At the end of the session, a second questionnaire related to the practice with virtual reality was conducted with the same evaluation criteria and a comparative analysis was carried out. Results: 12 undergraduate students from Hospital Angeles Mexico, CDMX and 12 traumatology and orthopedics residents at Hospital Santa Fe, Bogota were evaluated. The students in CDMX reported an average qualitative stress of 28.50% during habitual practices, which decreased to an average of 14.67% after virtual reality practice. Residents in Bogotá experienced an average qualitative stress of 30.50% with their current learning methods but this reduced to an average of 13.92% after using virtual reality. These findings indicate that t

关键词： Virtual Reality Academic Stress Learning Strategies Spine Surgery Training

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AI情感陪伴开启智慧新生活

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商业周刊（中文版） 2024年第5期 70-72页

作者： Erica.ch 不详

数字经济经历了从PC的发明普及到移动互联网的兴盛,如今来到以AI为核心驱动力的新阶段。AI渗透现代人的日常起居,影响着他们的生活方式。部分机器人/宠物已迈入与人类进行感情交流的时代,AI情感陪伴机器人LoVoT正是AI大潮的产物。未来,... 详细信息

数字经济经历了从PC的发明普及到移动互联网的兴盛,如今来到以AI为核心驱动力的新阶段。AI渗透现代人的日常起居,影响着他们的生活方式。部分机器人/宠物已迈入与人类进行感情交流的时代,AI情感陪伴机器人LoVoT正是AI大潮的产物。未来,人类将更自然地和机器进行交流,对于机器的反馈需求也会逐步细化,社会生活的应用和服务形态势必将迎来又一轮变革。

关键词：移动互联网感情交流日常起居服务形态 AI 机器人情感陪伴核心驱动力

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olefin Polymerization Behavior of Titanium(IV) Complexes with Fluorinated and Non-fluorinated Aliphatic Phenoxyimine Ligands

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chinese Journal of Polymer Science 2024年第1期42卷 52-62,I0007页

作者： Vladislav A.Tuskaev Kasim F.Magomedov Svetlana ch.Gagieva Dmitry A.Kurmaev Yulia V.Nelyubina Evgenii K.Golubev Maria D.Evseeva Viktor G.Vasil'ev Galina G.Nikiforova Mikhail I.Buzin Vyacheslav S.Bogdanov Boris M.Bulychev Department of chemistry M.V.Lomonosov Moscow State UniversityMoscow 119992Russian Federation A.N.Nesmeyanov Institute of organoelement Compounds Russian Academy of SciencesMoscow119991Russian Federation Enikolopov Institute of Synthetic Polymer Materials Russian Academy of SciencesMoscow 117393Russian Federation

A series of Ti(Ⅳ) dich.oride and dialkoxide com plexes with phenoxyimine ligands containing fluorinated and nonfluorinated aliphatic imine fragments have been *** molecular structures of complexes 1 and 4 were established by single-crystal X-ray diffraction *** complexes adopt a distorted octahedral coordination structure around the titanium atom and two oxygen atoms are situated in trans position while two nitrogen atoms and two outgoing ligands(Cl or iPro) are situated in cis *** of activators(MMAo-12 and combinations Et_nAICl_(3-n)+Bu_(2)Mg) and outgoing ligand(Cl or iPro) nature on the catalytic activity and properties of the resulting polymers was *** Ti complexes,despite the nature of the outgoing ligands(Cl or iPro) in the presence of Al/Mg activators,was found to display a high ethylene polymerization activity in the range 1600-3830 kg_(polymer)·mol_(Ti)^(-1)·h^(-1)·atm^(-1) with a viscosity average molecular weight(M_v) value in the range 1.1×10~6-7.1×10~6 Dalton(Da).The resulting UHMWPE can be processed by a solventless method into high-strength and high-modulus oriented *** rheological characteristics of a polymer melt have been *** absence of a cross-over point did not allow to compare the values of the molecular weight distribution of polymers obtained on fluorinated and non-fluorinated pre-catalysts,however,the estimation of the entanglement density is in good agreement with the mechanical characteristics of oriented film *** activation with methylalumoxane,the activity of the com plexes decreased very significantly;however,a polymer with a molecular weight of about 12 million Da was *** the process of ethylene/octene-1 copolymerization,fluorine-containing precatalysts showed a clear advantage over non-fluorinated analogues both in activity and in comonomer content.

关键词： FI catalysts Titanium(IV) (Co)polymerization Al/Mg co-catalyst Ultra-high molecular weight polyethylene

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Impact of Earthquake Action on the Design and Sizing of Jointed Masonry Structures in South Kivu, DRC

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open Journal of Civil Engineering 2024年第1期14卷 127-153页

作者： Edmond Dawak Fezeu Marcelline Blanche Manjia chérif Bishweka Biryondeke Patient Kubuya Binwa Élodie Rufine Zang chrispin Pettang Laboratory of Engineering Civil and Mechanics Doctoral Research Unit for Engineering and Applications University of Yaound&#233 I Yaound&#233 Cameroon Department of Civil Engineering Faculty of Applied Sciences and Technologies Free University of Great Lakes Countries Goma DRC

This article deals with the investigation of the effects of seismic impacts on the design and dimensioning of structures in South Kivu. The starting point is the observation of an ambivalence that can be observed in the province, namely the non-consideration of seismic action in the study of structures by both professionals and researchers. The main objective of the study is to show the importance of dynamic analysis of structures in South Kivu. It adopts a meta-analytical approach referring to previous researches on South Kivu and proposes an efficient and optimal method. To arrive at the results, we use Eurocode 7 and 8. In addition, we conducted static analysis using the Coulomb method and dynamic analysis using the Mononobe-okabe method and compared the results. At Nyabibwe, the results showed that we have a deviation of 24.47% for slip stability, 12.038% for overturning stability and 9.677% for stability against punching through a weight wall.

关键词： Jointed Masonry Weight-Bearing Structures Seismic Action Eurocode 7 and 8 Static and Dynamic Analysis

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融合多特征和注意力机制的多模态情感分析模型

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数据分析与知识发现 2024年第5期8卷 91-101页

作者：吕学强田驰张乐杜一凡张旭才藏太北京信息科技大学网络文化与数字传播北京市重点实验室北京100101 青海师范大学藏语智能信息处理及应用国家重点实验室西宁810008

【目的】针对当前多模态情感分析中多模态特征提取不充分,模态内部信息和模态间交互信息结合不充分的问题,提出一种融合多特征和注意力机制的多模态情感分析模型。【方法】在多模态特征提取方面,增加视频模态中人物的肢体动作、性别和... 详细信息

【目的】针对当前多模态情感分析中多模态特征提取不充分,模态内部信息和模态间交互信息结合不充分的问题,提出一种融合多特征和注意力机制的多模态情感分析模型。【方法】在多模态特征提取方面,增加视频模态中人物的肢体动作、性别和年龄特征;对于文本模态,融合基于BERT的字粒度语义向量和融合义原信息的词粒度语义向量,丰富了多模态数据的低层特征。利用自注意力机制和跨模态注意力机制以实现模态内部信息和模态间信息的充分结合。将各模态特征进行拼接,通过软注意力机制为各模态特征分配注意力权重,通过全连接层输出最终的情感分类结果。【结果】在公开数据集ch-SIMS和本文构建的热点舆情评论视频数据集HPoC上与Self-MM模型对比,实验结果表明,本文模型在ch-SIMS数据集上的二分类准确率、三分类准确率和F1值分别提升1.83、1.74和0.69个百分点,在HPoC数据集上分别提升1.03、0.94和0.79个百分点。【局限】视频中人物所处的场景可能不断变化,不同的场景可能蕴含不同的情感信息,模型未考虑融合人物所处的场景信息。【结论】本文模型丰富了多模态数据的低层特征,充分结合模态内部信息和模态间信息,能够有效提升情感分析的效果。

关键词：多特征多模态情感分析注意力机制

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A位取代和缺陷钝化实现钙钛矿薄膜的低阈值红光放大自发辐射

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发光学报 2024年第7期45卷 1068-1076页

作者：王亮严梦彤李妍吕梅陆红波朱俊合肥工业大学仪器科学与光电工程学院安徽省半导体检测技术与仪器工程研究中心测量理论与精密仪器安徽省重点实验室安徽合肥230009 合肥工业大学化学与化工学院安徽合肥230009

作为发红光的光学增益介质,CsPbI_(2)Br钙钛矿材料具有良好的热稳定性和合适的光学带隙,引起了研究者的广泛关注。然而,溶液法制备的CsPbI2Br薄膜在高湿度环境下易发生相变,同时薄膜存在大量缺陷,阻碍了其性能提升。鉴于此,采用部分FA^(... 详细信息

作为发红光的光学增益介质,CsPbI_(2)Br钙钛矿材料具有良好的热稳定性和合适的光学带隙,引起了研究者的广泛关注。然而,溶液法制备的CsPbI2Br薄膜在高湿度环境下易发生相变,同时薄膜存在大量缺陷,阻碍了其性能提升。鉴于此,采用部分FA^(+)(ch_(4)N_(2)^(+))进行A位取代以提高钙钛矿薄膜的相稳定性,然后利用聚甲基丙烯酸甲酯(PMMA)对钙钛矿薄膜进行表面钝化。得益于FA^(+)阳离子带来的薄膜形貌的改善和PMMA良好缺陷钝化效果,实现了Cs_(0.7)FA_(0.3)PbI_(2)Br钙钛矿薄膜的低阈值红光放大自发辐射(ASE),其发射波长为689 nm,纳秒激光激发下的阈值为15μJ/cm^(2)。同时,该薄膜具有良好的疏水性和光稳定性,在大气湿度环境下(RH为(40±10)%),采用3000μJ/cm^(2)脉冲激光持续照射120 min,其ASE强度仍能维持其初始值的93%。这项工作为实现低阈值高稳定的红光ASE和激光提供了参考。

关键词：钙钛矿放大自发辐射阳离子取代缺陷钝化

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Diabetes Screening and Cardiovascular Risk in Tuberculosis Patients in Conakry and Surrounding Towns

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open Journal of Endocrine and Metabolic Diseases 2024年第1期14卷 7-13页

作者： Mamadou chérif Diallo Mamadou Dian Mamoudou Diallo Mody Abdoulaye Barry Kadija Dieng Alpha Mamadou Diallo Mamadou Mansour Diallo oumou Diallo Amadou Kaké Gamal Abdel Nasser University of Conakry Conakry Guinea Endocrinology-Diabetology Department of Donka University Hospital Conakry Guinea Foundation for The Fight against Diabetes and Non-Communicable Diseases Conakry Guinea

objective: To determine the prevalence of diabetes and the level of cardiovascular risk in tuberculosis patients treated in Conakry and surrounding towns. Method: This was a cross-sectional study carried out at tuberculosis treatment centers in Conakry and surrounding towns (Coyah and Dubréka) on World TB Day, November 14, 2022, among 350 tuberculosis patients. We determined the proportion of TB patients with diabetes and high hyperglycemia. We determined the chi-square to identify the factors associated with the occurrence of diabetes in tuberculosis patients, and a significance threshold with p Results: The average age of participants was 33.5 ± 14.5 years, and they were predominantly male (59.7%). The majority of participants lived in Conakry (96.3%). 5.7% were known diabetics and 4.6% were known hypertensives. We found a prevalence of diabetes of 9.4%. Among diabetics, 39% were diabetes discoveries. 30% were hypertensive or had high blood pressure. of these hypertensive patients, 26.4% were unrecognized hypertensives. Age and hypertension were statistically significantly associated with the onset of diabetes in tuberculosis patients. Medium, high and very high levels of cardiovascular risk were present in 23.4%, 8.9% and 3.4% respectively. Conclusion: Diabetes is common in tuberculosis patients. Cardiovascular risk factors, notably hypertension and cardiovascular risk level, are frequently associated with tuberculosis. Tuberculosis patients with cardiovascular risk factors should be screened for diabetes.

关键词： Screening Diabetes Tuberculosis Cardiovascular Risk Conakry

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Malaria prevalence in north-eastern Nigeria:A cross-sectional study Houben ch^(1*),Fleischmann H^2,Gǜckel M^3

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Asian Pacific Journal of Tropical Medicine 2013年第11期6卷 865-868页

作者： Houben ch Fleischmann H Gckel M Diagnostic Center MMM group & Specialist Hospital Yola Hospital RoadP.M.B.2266YolaAdamawa.StateNigeria Medical Mission Institute Tropical MedicineHermann Schell Str 797074 WrzburgGermany Helios Kliniken Schwerin Wismarsche Str 393-39719049 SchwerinGermany

objective:To assess the prevalence of malaria parasitemia in north-east Nigeria and to evaluate the measures for the prevention of ***:A village in north-eastern Nigeria was selected for the cross sectional study at the height of the rainy season in october 2011.A total of 550 inhabitants of a hamlet were recruited for this *** obtaining the consent individuals received a structured interview and were tested for malaria parasites in their blood *** testing positive for malaria were given a course of artemesinin-based combination therapy（ACT）.Results:A total of 497 inhabitants representing approximately 90 percent of the population participated:a quarter of the study group carried malaria parasitesexclusively Plasmodium falciparum（***）-representing a *** parasite rate（PfPR） of 24.5%.Besides,53/138 in the age group of 2 to old children tested positive for *** representing a PfPR2-10 value of 38.4%.Malaria control measures were used in just under a third（157/497） of this *** these measures 28/157（17.8%） still tested positive for ***:The malaria burden is overestimated for this region in north-east *** findings support an intermediate pattern of malaria *** 30%bed nets coverage for malaria control is well below the WHo estimates for 2011.

关键词： Malaria control Malaria endemicity Malaria prevalence Malaria transmission

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