Management of Significant Environmental Aspects and Impacts in Accordance with the ISO 14001:2015 Standard during the Operation and Maintenance Phase of Senegal River Basin Development Authority Hydroelectric Works and Facilities: The Case of Manantali Dam

This study aims to determine the environmental aspects and impacts of the phase relating to the operation of Manantali’s hydroelectric structures and facilities according to the requirements of the ISO 14001 version 2015 standard. To do this, the mapping of the different work areas made it possible to identify all the activities within the framework of the farm. Based on the mapping, environmental measurements made including noise level, brightness, electric and magnetic fields, total particles, PM10, PM2.5, PM1 showed the work areas with the exposure limit values exceeded. The inventories of the waste produced show eighteen (18) types of waste, 67% of which are special industrial waste (SIW), 28% are ordinary industrial waste (OIW) and 5% are inert industrial waste (IIW). The identification and assessment of environmental aspects and impacts made it possible to determine sixteen (16) positive and negative significant environmental aspects (ESAs). The positive AES must be maintained, and for the negative ones, mitigation and mitigation measures must be put in place in order to manage them effectively. This will ultimately improve environmental management in the operation of hydroelectric structures and facilities.

Psychosocial Aspects of Male Infertility at the Service of Urology-Andrology of the Hospital of the Sino-Guinean Friendship

Objective: Describe the psychosocial aspects of male infertility at the hospital of the Sino-Guinean Friendship. Patients and method: It is a prospective study of a descriptive type covering a period of 6 months. The study covered 17 patients, all received for a desire to conceive after at least one year of regular sexual intercourse without contraception. The data were collected from patient interviews using a pre-established questionnaire. Results: The average age of the patients was 32.07 years with extremes of 23 years and 42 years. During this study, 64.70% of patients were no longer participating in community ceremonies. The patients’ relationships with their spouse and family deteriorated in 52.94% and 47.06%, respectively. Conversely, relations with the family of origin remained unchanged in 70.59 percent of cases. The reduction in economic activity was by 13 patients (76.48%). Conclusion: Male infertility causes a real psychic earthquake in men with its corollaries of negative feelings. The rather complex moral repercussions of male infertility affect not only the individual, his/her partner, and family, but also economic activity.

Study on the Influence of Aspect Ratio on the Seismic Response and Overturning Resistance of a New Staggered Story Isolated Structure

The aspect ratio of the structure has a significant impact on the overall stability of the ultra high-rise building. A large aspect ratio of the structure increases the risk of overturning and reduces the lateral stiffness of the structure, leading to significant tensile and compressive stresses in the isolated bearings. To study the effect of aspect ratio on the seismic response and overturning resistance of a new staggered story isolated structure, three models with different aspect ratios were established. Nonlinear time-history analysis of the three models was conducted using ETABS finite element software. The results indicate that the overturning moment and overturning resistance moment of the superstructure in the new staggered story isolated structure increase with an increasing aspect ratio. However, the increase in the overturning moment of the superstructure is much greater than the increase in the overturning resistance moment, resulting in a decrease in the overturning resistance ratio of the superstructure with an increasing aspect ratio. The overturning moment and overturning resistance moment of the substructure in the new staggered story isolated structure decrease with an increasing aspect ratio. However, the decrease in the overturning moment of the substructure is greater than the decrease in the overturning resistance moment, leading to an increase in the overturning resistance ratio of the substructure with an increasing aspect ratio. The decrease in the overturning resistance ratio of the superstructure in the new staggered story isolated structure is much greater than the increase in the overturning resistance ratio of the substructure. Therefore, as the aspect ratio of the overall structure increases, the overturning resistance ratio of the superstructure and the entire structure decreases.

Response of soil nutrients to terracing and environmental factors in the Loess Plateau of China

Terracing is a widely adopted agricultural practice in mountainous regions around the world that aims to conserve soil and water resources.Soil nutrients play a crucial role in determining soil quality,particularly in landscapes prone to drought.They are influenced by factors such as land-use type,slope aspect,and altitude.In this study,we sought to examine the impact of terracing on soil nutrients(soil organic content(SOC),total nitrogen(TN),nitrate-nitrogen(NO_(3)^(-)-N),ammonium nitrogen(NH_(4)^(+)-N),total phosphorus(TP),available phosphorus(AP),total potassium(TK),and available potassium(AK))and how they vary with environmental factors in the Chinese Loess Plateau.During the growing season,we collected 540 soil samples from the 0 to 100 cm soil layer across five major land-use types,different slope aspects,and varying altitudes.Additionally,a meta-analysis of literature data further corroborated the effective accumulation of soil nutrients through terracing in the Loess Plateau.Our findings are as follows:(1)Terraced fields,regardless of land-use type,showed a significant improvement in SOC and TN content.(2)Soil nutrient contents within terraced fields were predominantly higher on sunny slopes.(3)Terraces at lower altitudes are characterized by elevated SOC concentrations.(4)A meta-analysis of literature data pertaining to terracing and soil nutrients in this region confirmed the effective accumulation of soil nutri-ents through terracing.The elucidated outcomes of this study offer a profound theoretical underpinning for the accurate planning and management of terraces,the scientific utilization of land resources,and the enhancement of land productivity.

Elliptical vibration chiseling:a novel process for texturing ultra-high-aspect-ratio microstructures on the metallic surface

High-aspect-ratio metallic surface microstructures are increasingly demanded in breakthrough applications,such as high-performance heat transfer enhancement and surface plasmon devices.However,the fast and cost-effective fabrication of high-aspect-ratio microstructures on metallic surfaces remains challenging for existing techniques.This study proposes a novel cutting-based process,namely elliptical vibration chiseling(EV-chiseling),for the high-efficiency texturing of surface microstructures with an ultrahigh aspect ratio.Unlike conventional cutting,EV-chiseling superimposes a microscale EV on a backward-moving tool.The tool chisels into the material in each vibration cycle to generate an upright chip with a high aspect ratio through material deformation.Thanks to the tool’s backward movement,the chip is left on the material surface to form a microstructure rather than falling off.Since one microstructure is generated in one vibration cycle,the process can be highly efficient using ultrafast(>1 kHz)tool vibration.A finite element analysis model is established to explore the process mechanics of EV-chiseling.Next,a mechanistic model of the microstructured surface generation is developed to describe the microstructures’aspect ratio dependency on the process parameters.Then,surface texturing tests are performed on copper to verify the efficacy of EV-chiseling.Uniformed micro ribs with a spacing of 1–10μm and an aspect ratio of 2–5 have been successfully textured on copper.Compared with the conventional EV-cutting that uses a forward-moving tool,EV-chiseling can improve the aspect ratio of textured microstructure by up to 40 times.The experimental results also verify the accuracy of the developed surface generation model of microstructures.Finally,the effects of elliptical trajectory,depth of cut,tool shape,and tool edge radius on the surface generation of micro ribs have been discussed.

Effect of Low pH on Forming Process of Desulfurization Gypsum Composite Boards Strengthened by Melamine-formaldehyde Resin

Through exploring the effects of low pH on the composite system of desulfurization gypsum(DG)enhanced by melamine-formaldehyde resin(MF),it is found that the inducing of sulfate-ion,in contrast to chloride and oxalate ions,favors the longitudinal growth of the crystalline form of the hydration product,which was relatively simple and had the highest length to width(L/D)ratio.At the same time,MF can also improve L/D ratio of gypsum hydration products,which favors the formation of hydrated whiskers.Finally,in a composite system composed of hemihydrate gypsum,MF,and glass fibers,when dilute sulfuric acid was used to regulate pH=3-4,the tight binding formed among the components of the composite system compared to pH=5-6.The hydration product of gypsum adheres tightly to glass fiber surface and produces a good cross-linking and binding effect with MF.The flexural strength,compressive strength,elastic modulus,and water absorption of the desulphurized gypsum composite board is 22.7 MPa,39.8 MPa,5608 MPa,and 1.8%,respectively.

A Study on the Structural Contradictions in the US-Turkey Alliance Relations

After the Cold War and especially since the Justice and Development Party administration led by Erdogan,the US-Turkey alliance relations have declined.The two countries have sharp structural contradictions on a series of issues.Due to the profound geopolitical landscape changes,the interdependence on security and defense between the United States and Turkey has been severely weakened,leading to significant divergence in threat definition and pursuit of interests.Turkey has continuously enhanced its diplomatic autonomy,seeking to change its weak position in the original alliance relations,and striving to become a regional leader.These structural contradictions inevitably trigger the hedging of policies and interests between the United States and Turkey.

The Contradiction between “Soul” and “Body” in André Gide’s Pastoral Symphony

André Gide is one of the most important writers in the history of French literature in the 20th century.His works are highly distinctive:on the one hand,there is strong coherence and beautiful language between his works,which gives them a strong musicality.On the other hand,his works delve deeper into the struggle between the“soul”and the“body”under the oppression of“religious concepts”,which is most evident in one of his representative works:Pastoral Symphony.This article will analyze and explore the contradiction between“soul”and“body”reflected in the work of“Pastoral Symphony”from three aspects:“modernity”,“aesthetics”,and“characters’prototypes”.

Influence of quarantine during the coronavirus disease 2019(COVID-19)pandemic on physical and psychosocial aspects:perceptions of 214 Brazilian athletes

Background:Social distancing may affect athletes,training,causing negative effects on mental and physical health.Objective:This study therefore aimed to characterize the perception of Brazilian athletes about their physical and psychosocial aspects,sleep quality and coping strategies during the quarantine of the coronavirus disease 2019(COVID-19)pandemic.Methods:This was a cross-sectional study with online survey,performed with Brazilian athletes(amateur and professional)over 18 years.The main outcomes measures assessed were physical and psychosocial aspects,sleep quality and coping strategies.Results:A total of 214 athletes were included.The average weekly hours of training during the quarantine was 4.71±3.71 h,of which 64.5%athletes(138/214)were oriented by medical staff during training.For 52.8%(113/214)of athletes,training intensity during the quarantine was different/very different from the intensity before the quarantine.79.4%athletes(170/214)reported moderate to extreme difficulties in keeping the same level of training during the quarantine.77.1%athletes(165/214)had moderate to extreme anxiety and each of the athletes had concern about his or her athletic career future,including return to the sport.72.9%athletes(156/214)reported change in sleep schedule during the quarantine period.Conclusion:The quarantine period during COVID-19 pandemic negatively affected the athlete^perception about training routine,since athletes reported reduction in training hours and training intensity.Overall,the athletes reported that they were moderately to extremely anxious.They also had concerns about their career in the future,as well as concerns regarding return to sport.

Sustainability as an Ethical Aspect of the Theory-Practice Gap in Business Schools

This paper aims to reframe sustainability as an ethical aspect of the theory-practice gap in business and management education for sustainable development,which should be viewed as an integral part of knowledge produced and disseminated in business schools.The paper adopts a narrative approach to review the relevant literature on two streams of research,namely,the theory-practice gap and sustainability in reforming business schools.The synthesis and discussion of the existing literature suggest that while sustainability is frequently viewed with an ethical sentiment,the existing research overlooks its significance in bringing together knowledge and practice in business schools.This paper highlights the potential of sustainability as a theoretical lens in bridging the theory-practice gap in business schools;proposing to rethink the conceptual space that lies in ethics for further theoretical developments.The author urges business and management scholars to engage in burgeoning debates on business school reforms relating to the theory-practice gap and sustainability with an emphasis on ethics.The author contends that the neglected theoretical linkages between the theory-practice gap and sustainability provide fruitful directions for future research.Through a moral lens,business schools can move toward responsible management education for a more sustainable future.

Changes in the Features of Major Contradictions

Immediately after humanity entered the new century,the worldseems somewhat a bit turbulent because of the following events.First are the September 11 events,which were followed by U.S.militaryattacks against Afghanistan.Last year witnessed the continuity of Arab-Israel conflicts in the Middle East,and at the very beginning of the newyear,the United States dispatched warships to the Persian Gulf for a“war to topple the Saddam regime”.The Democratic People’s Republicof Korea(DPRK)suddenly declared that it has decided to withdraw fromthe Nuclear Non-proliferation Treaty just after Iraq stated that it wasdetermined to resist the United States.Whither the world in the new year?This is a question that all of the academic circles on international relationsare trying to answer.To this end,on January 9,2002,we speciallyinvited Lu Zhongwei,Research Professor and President of China Instituteof Contemporary International Relations and some other experts oninternational relations from the institute to hold a symposium with the theme“Prospect on World Trend 2003.”Now we present their discussions as anew-year gift to our readers who are always in support of our journal.Wehope this would do a bit for their mastery of international situation.

Fuzzy-Inverse-Model-Based Networked Tracking Control Frameworks of Time-Varying Signals

Dear Editor,Tracking control in networked environment is a very challenging problem due to the contradiction of rapid response to the time-varying signal and the inevitable delay introduced by networks. This letter has proposed several fuzzy-inverse-model-based network tracking control frameworks which are helpful in handling the system with nonlinear dynamics and uncertainties.

ASPECTS评分及多模态CT定量分析在AIS预后预测中的应用

目的探讨ASPECTS评分及多模态CT中各参数在急性缺血性脑卒中(AIS)预后预测的应用价值。方法收集2019年1月-2023年4月诊断为AIS并在蚌埠医学院第一附属医院就诊的患者,在治疗前均行多模态CT(包括NCCT、CTA、CTP)检查的患者93例,3个月后随访并根据改良Rankin量表评分(mRs)将患者分为预后良好组(mRs≤2)和预后不良组(mRs>2),收集两组患者的临床资料及多模态CT定量参数比较其在预测AIS中预后中有无意义。结果一般资料分析可见预后不良组患者入院基线NIHSS评分、远端侧支循环及ASPECTS评分均与预后良好组之间有一定的统计学差异(P<0.05);CT灌注定量参数分析可见预后不良组CBF较低,而MTT、Tmax、TTP较预后良好组延长,且具有统计学意义(P<0.05)。其中NIHSS、远端侧支循环及Tmax为影响AIS预后的独立危险因素。结论NIHSS、远端侧支循环、ASPECTS及多模态CT可以对AIS的预后进行评测。均具有较好的预测效能,其中Tmax及NIHSS预测效能最好。

颈动脉斑块MRI特征与同侧急性脑梗死患者DWIGASPECTS的相关性研究

目的:探讨颈动脉斑块MRI特征与同侧急性脑梗死患者DWI-ASPECTS的相关性。方法:回顾性搜集我院85例颈动脉斑块患者的临床及影像资料,所有患者均于出现脑血管症状2周内行颈动脉高分辨率MRI和常规颅脑MRI平扫。将患者分为DWI-ASPECTS≤7分组和DWI-ASPECTS>7分组,比较两组间临床、实验室资料和颈动脉斑块定量、定性指标的差异。通过Logistic回归筛选DWI-ASPECTS评分的预测因子。结果:25例(29.4%)DWI-ASPECTS≤7分,60例(70.6%)DWI-ASPECTS>7分。DWI-ASPECTS≤7分组患者纤维帽变薄/破裂(分别为80.0%和35.0%,P<0.001)、斑块内出血(分别为72.0%和21.7%,P<0.001)、钙化(分别为76.0%和45.0%,P=0.009)和富脂质坏死核心(分别为72.0%和45.0%,P=0.023)的发生率均高于DWI-ASPECTS>7分组;此外,DWI-ASPECTS≤7分组患者显示出更高的斑块负荷,DWI-ASPECTS≤7分组与DWI-ASPECTS>7分组的最大管壁厚度[分别为(4.38±1.68)和(3.47±1.78)mm,P=0.033]、平均管腔面积[分别为(15.33±11.57)和(22.88±13.95)mm 2,P=0.019]、最小管腔面积[分别为(11.52±11.23)和(18.98±13.52)mm 2,P=0.017]、平均管壁面积[分别为(62.81±14.32)、(55.66±14.93)mm 2,P=0.045]、最大管壁面积[分别为(66.70±14.57)、(59.56±15.19)mm 2,P=0.049]、平均标准化管壁面指数[分别为(81±14)%、(71±16)%,P=0.011]、最大标准化管壁指数[分别为(86±14)%、(76±16)%,P=0.012)]差异均有统计学意义。DWI-ASPECTS≤7分组中NIHSS评分>4分的患者比例更高(分别为48%和23.3%,P=0.025),高密度脂蛋白浓度更低[分别为(1.24±0.28)、(1.10±0.28)mmol/L,P=0.043]。Logistic回归分析结果显示,纤维帽变薄/破裂(OR=4.133,95%CI:1.151~14.836,P=0.030)和斑块内出血(OR=6.409,95%CI:1.737~23.646,P=0.005)与较低的DWI-ASPECTS评分显著相关。结论:颈动脉斑块中存在纤维帽变薄/破裂和斑块内出血的急性脑卒中患者DWI-ASPECTS评分更低,有助于评估患者的病情严重程度。

How to Prove Riemann Conjecture by Riemann’s Four Theorems

Riemann (1859) had proved four theorems: analytic continuation ζ(s), functional equation ξ(z)=G(s)ζ(s)(s=1/2+iz, z=t−i(σ−1/2)), product expression ξ1(z)and Riemann-Siegel formula Z(z), and proposed Riemann conjecture (RC): All roots of ξ(z)are real. We have calculated ξand ζ, and found that ξ(z)is alternative oscillation, which intuitively implies RC, and the property of ζ(s)is not good. Therefore Riemann’s direction is correct, but he used the same notation ξ(t)=ξ1(t)to confuse two concepts. So the product expression only can be used in contraction. We find that if ξhas complex roots, then its structure is destroyed, so RC holds. In our proof, using Riemann’s four theorems is sufficient, needn’t cite other results. Hilbert (1900) proposed Riemann hypothesis (RH): The non-trivial roots of ζhave real part 1/2. Of course, RH also holds, but can not be proved directly by ζ(s).

On Daniel Bell's The Cultural Contradictions of Capitalism

This article makes a brief introduces to Daniel Bell's The Cultural Contradictions of Capitalism which explores how a bourgeois economy coexists with an anti-bourgeois culture. This article is comprised of four parts including the concept of culture、the disjunction of three realms(economics, politics and culture)、the cultural contradictions of capitalism and the evaluation on Daniel Bell's theory. It offers a close look into the inner relation between different spheres in the capitalist society illustrated in Bell's book, and Bell's theory in terms of cultural contradictions of capitalism will be concretely elaborated.

Effect of coil and chamber structure on plasma radial uniformity in radio frequency inductively coupled plasma

Enhancing plasma uniformity can be achieved by modifying coil and chamber structures in radio frequency inductively coupled plasma(ICP)to meet the demand for large-area and uniformly distributed plasma in industrial manufacturing.This study utilized a two-dimensional self-consistent fluid model to investigate how different coil configurations and chamber aspect ratios affect the radial uniformity of plasma in radio frequency ICP.The findings indicate that optimizing the radial spacing of the coil enhances plasma uniformity but with a reduction in electron density.Furthermore,optimizing the coil within the ICP reactor,using the interior point method in the Interior Point Optimizer significantly enhances plasma uniformity,elevating it from 56%to 96%within the range of the model sizes.Additionally,when the chamber aspect ratio k changes from 2.8 to 4.7,the plasma distribution changes from a center-high to a saddleshaped distribution.Moreover,the plasma uniformity becomes worse.Finally,adjusting process parameters,such as increasing source power and gas pressure,can enhance plasma uniformity.These findings contribute to optimizing the etching process by improving plasma radial uniformity.

Bearing capacity of circular footings on multi-layered sand-waste tire shreds reinforced with geogrids

The presence of waste tires poses an environmental challenge as they occupy a significant amount of land and are expensive to dispose in landfills.However,reusing waste tires can address this issue when waste tires are used in geotechnical applications.To determine the viability of this approach,laboratoryscale tests were conducted to investigate load-bearing capacity of circular footings on sand-tire shred(STS)mixtures with shredded waste tire contents of 5%e15%by weight and three different widths of shreds.The investigation focused on analyzing the thickness of layers composed of STS mixtures,the soil cap,and the impact of geogrids on bearing capacity.The results indicate that a specific mixture of sand and tire shreds provides the highest footing-bearing capacity.In addition,the optimal shred content and size were found to be 10%by weight and 2 cm×10 cm,respectively.Furthermore,for a given tire shred width,a particular length provides the largest bearing capacity.The results agree well with that of previous research conducted by the first author and his colleagues in direct shear and California bearing ratio(CBR)tests.The primary finding of this research is that the use of two-layered STS mixtures reinforced by geogrids significantly enhances the bearing capacity.

The Synthesis of Aspects on the Management of Second Language Teaching

Principles which teachers should adhere to in second language class are based on the synthesis of linguistic,cultural and competent aspects.This paper first puts forward linguistic,cultural and competent aspects of second language teaching.Then,the principles which teachers should adhere to in second language class are introduced.Finally,the synthesis implication for second language teaching is presented.

A Misleading Aspect in The Use of English Teaching Language and Its Countermeasures

Teacher plays a key role in language teaching.Teaching language is the first thing that students notice of their English teacher's English.However,there is a misleading aspect in the use of teaching language.The author picks it out and offers some possible solutions.