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Impact of Domestic Solid Waste Management on Wet Land Water Quality: Case of Abomey-Calavi Municipality in Benin Republic

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Natural Resources 2021年第1期12卷 10-17页

作者： nikita Topanou Jacques K. Fatombi Jean Gouvidé Gbaguidi Taofiki Aminou Josse Gérard Mariane Domeizel Faculty of Science and Technology Natitingou Water and Environmental Chemistry Laboratory Natitingou Benin Laboratoire Chimie Provence Université Aix-Marseille/CNRS Equipe Chimie Environnement Continental-3 Place Victor Hugo Marseille Cedex France Hydrology and Water Resources Management (Laboratory of Hydrology Applied) National Water Institute Calavi Benin Laboratory for Physical-Chemical Analysis of Aquatic Environments (LAPMIA) of the Faculty of Science and Technology (FAST) of Abomey-Calavi University (UAC-Rep of Benin) Abomey-Calavi Benin

The waste management is a major environmental challenge in all the countries. In the Republic of Benin, in absence of controlled landfill, the wetlands are filling in by solid household waste to set up housing environments. This study aimed at identifying the various forms of wetlands water pollutions originated by this practice. Physico-chemical parameters of sampling water were determined by using Ionic chromatography and spectrometry of atomic absorption. The microorganisms indicating fecal peril were identified by the conventional techniques of microbiology. Water quality of a witness well was also used to assess the general water quality of the backfilled wetland. The results revealed the water samples collected from backefilled wetlands were mineralized (898.32 ± 6.13 μs/cm), rich in chlorinate (237.80 ± 4.23 mg/L) and nitrates ions (224.10 ± 3.42 mg/L). They are more colored (399.23 ± 3.01 Pt/Co) and more turbid (62.5 ± 2.48 NTU) than those of the unfilled wetlands. The results of microbiological analysis shown the presence of the cysts of Giardia lamblia (590/100 L) and cysts of Entamoeba histolytica (13/100 L) in all water, except those of witness well. The frequency of water contamination by bacteria indicating general degradation is 86.4%. The embankment of the wetlands by the solid household waste leads to the water pollution.

关键词： Domestic Solid Waste Wetlands Pollution Micro-Organism

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模拟引潮力作用下岩石破坏前兆的实验研究——加卸载响应比(LURR)理论和能量加速释放(AER)

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岩石力学与工程学报 2005年第17期24卷 3172-3179页

作者：张晖辉尹祥础梁乃刚李世愚余怀忠 Y.C.Wang C.Yin victor Kukshenko nikita Tomiline Surguei Elizarov 中国科学院力学研究所非线性力学国家重点实验室中国地震局地球物理研究所北京100081 昆士兰大学QUAKES地球科学系俄罗斯科学院Ioffe物理技术研究所 Interunis公司

大地震前加卸载响应比升高和能量加速释放这2种现象可以用来对地震进行中期预报。同时,加卸载响应比升高和能量加速释放有相同的物理机制。实验对于揭示地壳岩石的变形和破坏规律是非常重要的。在三轴应力条件下进行了岩石破坏声发射实... 详细信息

大地震前加卸载响应比升高和能量加速释放这2种现象可以用来对地震进行中期预报。同时,加卸载响应比升高和能量加速释放有相同的物理机制。实验对于揭示地壳岩石的变形和破坏规律是非常重要的。在三轴应力条件下进行了岩石破坏声发射实验,声发射技术是研究岩石变形破坏微观机理的重要手段。为了模拟日月引潮力对地球的加载和卸载作用,在一常数加载率的轴向压力作用下,叠加上微小的正弦扰动,力求能够模拟地下岩石复杂的受力状态。实验过程中记录到大量的声发射信息,声发射记录包括声发射发生的时间、空间坐标和振幅,它能够反映岩石试件内部每一个损伤(微裂纹)发生的时间、地点和强度。利用声发射记录系统地分析了岩石试件破坏前能量释放及加卸载响应比的演化情况,结果显示,岩石试件宏观破坏前出现了能量加速释放及加卸载响应比剧增这2种前兆现象,从而对地震临界点理论给予了实验支持,同时也为地震预测提供了实验依据。

关键词：岩石力学加卸载响应比能量加速释放声发射循环载荷临界点理论

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Inversion of Fourier Transform in Crack Dynamics Problem

Inversion of Fourier Transform in Crack Dynamics Problem

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The Sixth World Congress on Computational Mechanics in Conjunction with the Second Asian-Pacific Congress on Computational MechanicsⅠ

作者： Sergey I. Matioukevitch nikita F. Morozov Boris A. Plamenevski Department of Elasticity University of St.-Petersburg Universitetski pr. 28 St.-Petersburg 198504 Russia Department of Elasticity University of St.-Petersburg Universitetski pr. 28 St.-Petersburg 198504 Russia Department of Elasticity University of St.-Petersburg Universitetski pr. 28 St.-Petersburg 198504 Russia

One of the central problems of strength theory is the investigation of stress -strain situation near the irregular points in the elastic body. The statical problems take us the equations of elliptic type. This problem was practically settled in the investigations of v. Mazja, B. Plamenevski, J. Rice et al. At another stage the problem of dynamical loading leads us to the equations of hyperbolic type. This problem is more difficult in mathematical aspect. It's reduced to formal elliptic equations with the help of Fourier transform [1-2] and procedure of asymptotic series construction ne ar corner point is conducted. The asymptotic series for required solution are constructed by inverse Fourier transformation. The error of partial sums is estimated. The properties of solution and its applicability for fracture problems [3-4] are discussed.

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Catalytic Activity of Nanodiamonds in Azocoupling Reaction

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Journal of Biomaterials and Nanobiotechnology 2014年第3期5卷 173-178页

作者： nikita O. Ronzhin Alexey P. Puzyr Andrey E. Burov vladimir S. Bondar Institute of Biophysics SB RAS Krasnoyarsk Russia Special Design-Technology Bureau “Nauka” SB RAS Krasnoyarsk Russia

The catalytic efficiency of modified nanodiamonds (MND) in reactions of interaction between organic compounds was demonstrated on the example of azocoupling reaction (hydrogen peroxide-4-aminoantipyrine-phenol). It was found that catalytic action of MND was caused by redox active metal ions of Fe and Cu located on the MND surface. The neutralization of the ions significantly decreased catalytic properties of MND.

关键词： Diamond Nanoparticles Catalytic Activity Metal Ions Organic Reaction

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Local GABAergic Signaling within Sensory Ganglia Gates Peripheral Nociceptive Transmission

Local GABAergic Signaling within Sensory Ganglia Gates Perip...

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中国神经科学学会第十二届全国学术会议

作者： Xiaona Du Han hao Caixue Wang Xinmeng Li Hailin Zhang nikita Gamper Department of Pharmacology Hebei Medical University Faculty of Biological Sciences University of Leeds

Objective It is generally assumed that integration of somatosensory information is a function of the central nervous system. We aim to describe fully functional GABAergic communication within rodent peripheral sensory ganglia and show that it can modulate transmission of pain-related signals from the peripheral sensory nerves to the CNS. Methods The expression of components of GABAergic circuit in DRG was tested by RT-PCR and immunofluorecent measurment. Sniffer patch and HPLC-MS methods were used to measure GABA release from DRG. Effects of DRG GABAergic circuit on pain behaviors were tested by focal application of GABA, or activating GABAergic neuron in rat/mice through optogenetic or chemogenentic approaches. Intraplantar injection of bradykinin was the method using to induce acute pain of animal. CFA injection and CCI model were used as chronic pain model. Thresholds of animal responding to mechanical and thermal stimulations were measured by von Frey filament and Hargreaves tests. Results i) Sensory neurons express major proteins necessary for GABA synthesis and release. ii) Sensory neurons released GABA in response to depolarization. iii) In vivo focal infusion of GABA or GABA re-uptake inhibitor to sensory ganglia dramatically reduced acute peripherally-induced nociception and alleviated neuropathic and inflammatory pain. iv) Focal application of GABA receptor antagonists to sensory ganglia induced or exacerbated peripherally-induced nociception. v) Chemogenetic or optogenetic depolarization of GABAergic DRG neurons in vivo reduced acute and chronic peripherally-induced nociception. vi) GABA depolarized the majority of sensory neuron somata, yet produced a net inhibitory effect on the nociceptive transmission due to the filtering effect at nociceptive fiber t-junctions. Conclusion Our findings indicate that peripheral somatosensory ganglia represent a hitherto underappreciated site of somatosensory signal integration and offer a novel target for therapeutic i

关键词： DRG GABA pain transmission gate control theory

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耐甲氧西林表皮葡萄球菌合并Paprosky Ⅳ型股骨缺损的髋关节假体周围感染一例

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中国修复重建外科杂志 2023年第12期37卷 1578-1579页

作者： Artem M.Ermakov nikita I.Rozhkov Aleksandr S.Triapichnikov Andrei N.Koiushkov Ilizarov国家创伤和矫形医学研究中心骨关节感染科俄罗斯库尔干443503

本文作者来自俄罗斯库尔干Ilizarov国家创伤和矫形医学研究中心,其骨关节感染科建科50多年,分脊柱感染、关节感染和肢体感染3科,位于独立的感染楼内。由于病房、手术室、换药室都和普通骨科分开,最大程度避免了患者交叉感染。作者分享1... 详细信息

本文作者来自俄罗斯库尔干Ilizarov国家创伤和矫形医学研究中心,其骨关节感染科建科50多年,分脊柱感染、关节感染和肢体感染3科,位于独立的感染楼内。由于病房、手术室、换药室都和普通骨科分开,最大程度避免了患者交叉感染。作者分享1例髋关节假体周围感染患者采用自体骨移植+传统柄翻修成功,有一定借鉴意义,供中国同行参考。

关键词：两阶段翻修髋关节置换假体感染 Paprosky分型

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为另一个世界的想象提供栖身之地

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当代艺术与投资 2011年第12期 6-7页

作者：蔡影茜 nikita Yingqian Cai 广东时代美术馆

2011年似乎真的不是关于艺术的一年，相比于全球范围内的一系列重大自然和社会政治事件，艺术只是那个充满了人造物的龙卷风中心边上的某块还未被卷入的蛋糕．周遭危机四伏、风起云涌，它却还蹊跷地精致诱人并散发着香气。当然也有艺术... 详细信息

2011年似乎真的不是关于艺术的一年，相比于全球范围内的一系列重大自然和社会政治事件，艺术只是那个充满了人造物的龙卷风中心边上的某块还未被卷入的蛋糕．周遭危机四伏、风起云涌，它却还蹊跷地精致诱人并散发着香气。当然也有艺术主动卷入、或无法不被卷入的某些事例，

关键词：另一个世界想象政治事件艺术大自然龙卷风人造物

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Flocculation of Kaolinite Suspensions in Water by Coconut Cream Casein

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Journal of Water Resource and Protection 2011年第12期3卷 918-924页

作者： Jacques K. Fatombi Jean-Aimé Mbey Taofiki Aminou Bruno Lartiges nikita Topanou Odile Barres Roger G. Josse 不详

The flocculation of kaolinite colloidal particles was carried out at pH = 6 in suspension of initial turbidity varying between 24 NTU and 102 NTU by a casein extracted from Cocos nucifera cream. During Jar-test essays, 90% to 99% of colloids were eliminated in the sediments. The optimal doses of casein used depend on the initial colloids concentrations of the suspension and were found to be 60 mg/L and 100 mg/L respectively for suspensions having turbidity of 24 NTU and 102 NTU. The corresponding residual turbidity are respectively 2.80 NTU and 10.22 NTU for clarified water. The structural analysis of the freeze-dried sediments by FTIR shows sharp adsorption bands at 1558 cm–1 and 1653 cm–1, indicating the presence of casein in the sediment. The flocculation process between the particles of kaolinite and the coconut casein is adsorption and bridging.

关键词： Flocculation Coconut Casein Kaolinite Turbidity

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Clinical characteristics of COvID-19 patients who underwent tracheostomy and its effect on outcome:A retrospective observational study

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World Journal of virology 2022年第6期11卷 477-484页

作者： Yudhyavir Singh Kapil Dev Soni Abhishek Singh nikita Choudhary Fahina Perveen Richa Aggarwal Nishant Patel Shailendra Kumar Anjan Trikha Department of Anesthesiology Pain Medicine and Critical CareAll India Institute of Medical SciencesNew Delhi 110029India Department of Critical and Intensive Care Jai Prakash Narayan Apex Trauma CenterAll India Institute of Medical SciencesNew Delhi 110029India Department of Anesthesia All India Institute of Medical SciencesNew Delhi 110029India

BACKGROUND The exponential rise in Coronavirus disease 2019(COvID-19)cases has resulted in an increased number of patients requiring prolonged ventilatory support and subsequent *** the limited availability of literature regarding the outcomes of COvID-19 patients with tracheostomy,we attempted to study the clinical characteristics and multiple parameters affecting the outcomes in these *** To determine all-cause mortality following tracheostomy and its association with various risk factors in COvID-19 *** This retrospective study included 73 adult COvID-19 patients admitted to the ICU between 1 April,2020 and 30 September,2021 who underwent tracheostomy as a result of acute respiratory failure due to *** data collected included demographics(age,sex),comorbidities,type of oxygen support at admission,severity of COvID-19,complications,and other parameters such as admission to tracheostomy,intubation to tracheostomy,ICU stay,hospital stay,and *** This study included 73 adult patients with an average age of 52±16.67 years,of which 52%were *** average time for admission to tracheostomy was 18.12±12.98 days while intubation to tracheostomy was 11.97±9 *** mortality rate was 71.2%and 28.8%of patients were discharged *** mean duration of ICU and hospital stay was 25±11 days and 28.21±11.60 days,*** age,severe COvID-19,mechanical ventilation,shock and acute kidney injury were associated with poor prognosis;however,early tracheostomy in intubated patients resulted in better *** Patients with severe COvID-19 requiring mechanical ventilation have a poor prognosis but patients with early tracheostomy may benefit with no added *** recommend that the timing of tracheostomy be decided on a case-by-case basis and a well-designed randomised controlled trial should be performed to elucidate the potential benefit of early tracheostomy in such patients.

关键词： COvID-19 Intubation Mechanical ventilation ICU Tracheostomy Oxygen therapy

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民机复合材料等同性验证方法及二类错误控制研究

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航空制造技术 2020年第21期63卷 70-79页

作者：涂圣余音吕新颖 nikita Kalutskiy 上海交通大学航空航天学院飞行器先进结构与材料试验中心上海200240 莫斯科航空学院机身应力试验室莫斯科125080

在民用复合材料飞机的制造和适航审定过程中,复合材料等同性验证在新材料替代原材料后的适航认证方面发挥重要作用。基于复合材料等同性的验证原理,针对控制复合材料性能的关键参数,研究了等同性的验证方法。运用假设检验的方法,推导了... 详细信息

在民用复合材料飞机的制造和适航审定过程中,复合材料等同性验证在新材料替代原材料后的适航认证方面发挥重要作用。基于复合材料等同性的验证原理,针对控制复合材料性能的关键参数,研究了等同性的验证方法。运用假设检验的方法,推导了复合材料等同性中第二类错误的理论分析方法,并提出和讨论了降低犯第二类错误概率的措施。研究表明:通常利用统计检验来比较新材料与原材料在关键性能上的差异程度以判定材料是否等同;在目前的复合材料等同性检验中,除了注意第一类错误的控制,更应该重视危害性更大的第二类错误;而增大试验样本数量能够有效降低犯第二类错误的概率;针对复合材料在民用飞机中的应用位置和受力情况来控制犯第二类错误的概率,选择等同性试验样本数量,以达到在等同性验证中既控制第二类错误又降低验证成本的目的。

关键词：适航验证复合材料等同性验证假设检验第二类错误复合材料应用位置

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