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Nitrogen Pollution Threat to Mariculture and Other Aquatic Ecosystems:An Overview

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Journal of Pharmacy and Pharmacology 2021年第12期9卷 428-433页

作者： aman Prakash Sofia Khanam Department of Molecular and Cellular Engineering Sam Higginbottom University of AgricultureTechnology and Sciences NainiPrayagraj-211007UPIndia Department of Pharmacology Calcutta Institute of Pharmaceutical Technology&AHSUluberiaHowrah-711316West BengalIndia

In the back few decades,there has been a great increase in costal eutrophication across the globe resulting in hypoxia and anoxia,degradation of habitat,food-web modifications,and biodiversity loss due to the unregulated inputs of nitrogen to mariculture *** the 1850 and 1950 decades,before the industrial and green revolution,the rate of nitrogen supply on the Earth was limited to the bacterial nitrogen fixation rate but human deeds have adversely doubled the rate of the making of reactive,biologically available nitrogen on the Earth’s landmass and which is being supplied in an uncontrolled way to the mariculture bodies causing the threat to mariculture by *** artistic eutrophication of the coastal marine ecosystem has the potential to cause toxicological and ecological effects to the proliferation of primary producers either directly or *** depletion of the level of dissolved oxygen has the potential to the manufacturing of the reduced compounds,like hydrogen sulfide,further resulting in higher adverse toxic effects on aquatic *** inorganic nitrogenous compounds like NH4+,NH3,NO2−,HNO2,NO3−can be produced which can be taken up by the aquatic animals directly from the ambient water out of which ammonia(unionized)is highly toxic,while nitrate and ammonium(ions)are the least toxic but have the potential cause adverse effects on other flora and fauna also on humans.

关键词： Hypoxia Anoxia Mariculture Nitrogen Fixation Ammonia Eutrophication

Rates of readmission and reoperation after operative management of midshaft clavicle fractures in adolescents

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World Journal of Orthopedics 2021年第12期12卷 1001-1007页

作者： Laura A Carrillo Hao-Hua Wu aman Chopra Matt Callahan Toshali Katyal Ishaan Swarup School of Medicine Medical College of WisconsinMilwaukeeWI 53226United States Department of Orthopaedic Surgery UCSFSan FranciscoCA 94143United States School of Medicine Georgetown University School of MedicineWashington D.C.WA 20007United States

BACKGROUND The national rates of readmission and reoperation after open reduction internal fixation(ORIF)of midshaft clavicle fractures in adolescents is *** To determine rates of and risk factors for readmission and reoperation after ORIF of midshaft clavicle fractures in *** This retrospective study utilized data from the Healthcare Cost and Utilization Project State Inpatient Database for California and Florida and included 11728 patients 10–18 years of age that underwent ORIF of midshaft clavicle fracture between 2005 and *** within ninety days,reoperations within two years,and differences in patient demographic factors were determined through descriptive,univariate,and multivariate *** In total,3.29%(n=11)of patients were readmitted within 90 d to a hospital at an average of 18.91±18 d after discharge,while 15.87%(n=53)of patients underwent a reoperation within two years at an average of 209.53±151 d since the index *** most common reason for readmission was a postoperative infection(n<10).Reasons for reoperation included implant removal(n=49)at an average time of 202.39±138 d after surgery,and revision ORIF(n<10)with an average time of 297±289 d after index *** odds of reoperation were higher for females(P<0.01)and outpatients(P<0.01),while the odds of reoperation were lower for patients who underwent surgery in California(P=0.02).CONCLUSION There is a low rate of readmission and a high rate of reoperation after ORIF for midshaft clavicle fractures in *** are significant differences for reoperation based on patient sex,location,and hospital type.

关键词： Adolescent Clavicle fracture Reoperation Readmission

A Study of Compound Action Potentials in Current-Coupled Tracts: the General Case

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Journal of Applied Mathematics and Physics 2023年第11期11卷 3345-3353页

作者： aman Chawla Salvatore Domenic Morgera Indian Institute of Technology Delhi India University of South Florida Tampa USA

In this paper, the authors investigate compound action potentials formed when the underlying tract's axons have current-mediated coupling amongst themselves, and no field-mediated coupling. The key finding of the paper is that, for the case of biophysically inhomogeneous axon tracts, the compound action potential is governed by a Hodgkin-Huxley like equation itself in certain cases. The paper extends an earlier result for the identical axon case.

关键词： Compound Action Potentials Current-Mediated Coupling Biophysically Inhomogeneous Axon Tracts Hodgkin-Huxley Equation Identical Axon Case

Mechanism of Universal Quantum Computation in the Brain

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Journal of Applied Mathematics and Physics 2024年第2期12卷 468-474页

作者： aman Chawla Salvatore Domenic Morgera Department of Computer Science and Engineering Indian Institute of Technology Delhi India Department of Electrical Engineering University of South Florida Tampa USA

In this paper, the authors extend [1] and provide more details of how the brain may act like a quantum computer. In particular, positing the difference between voltages on two axons as the environment for ions undergoing spatial superposition, we argue that evolution in the presence of metric perturbations will differ from that in the absence of these waves. This differential state evolution will then encode the information being processed by the tract due to the interaction of the quantum state of the ions at the nodes with the “controlling’ potential. Upon decoherence, which is equal to a measurement, the final spatial state of the ions is decided and it also gets reset by the next impulse initiation time. Under synchronization, several tracts undergo such processes in synchrony and therefore the picture of a quantum computing circuit is complete. Under this model, based on the number of axons in the corpus callosum alone, we estimate that upwards of 50 million quantum states might be prepared and evolved every second in this white matter tract, far greater processing than any present quantum computer can accomplish.

关键词： Axons Quantum computation Metric perturbation Decoherence Time-coded information

Fast Processing of Optical Fringe Movement in Displacement Sensors Without Using an ADC

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Photonic Sensors 2013年第3期3卷 241-245页

作者： Babar HUSSAIN Taj MUHAMMAD Muhammad REHAN Haroon aman Muhammad ASLAM Masroor IKRAM M. Yasin Akhtar RAJA National Institute of Lasers and Optronics P. O. 45650 Islamabad Pakistan Pakistan Institute of Engineering and Applied Sciences P. O. 45650 Islamabad Pakistan Department of ECE EPIC Building UNC Charlotte 9201 University City Blvd. Charlotte NC 28223-000

An interferometer based optical sensor for displacement measurement is reported. This method requires quite simple signal processing as well as least electronic components. Referring to this technique, two photodiodes spatially shifted by 90 degrees were used. The output of photodiodes was converted into rectangular signals which were extracted in LabVIEW using the data acquisition card without using an analog to digital converters （ADC）. We have also processed the signals in C＋＋ after acquiring via parallel port. A Michelson interferometer configuration was used to produce linear fringes for the detection of displacements. The displacement less than 100nm could be measured using this technique.

关键词： Fast signal processing optical displacement sensor direction detection Michelson interferometer

Pd-Catalyzed New Type of Cross-Coupling of RCOOH and Styryltrifluoroborates

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International Journal of Organic Chemistry 2022年第4期12卷 181-188页

作者： Mohammad Al-Masum Musa aman Department of Chemistry Tennessee State University Nashville TN USA

The Palladium inserted hydridopalladium species represents as RCOOPdH. This work finds an interesting coupling of palladium inserted RCOOPdH species with potassium styryltrifluoroborates to synthesize new kinds of styryl ester compounds. Pd(OAc)2 was most effective catalyst for this new cross-coupling reaction under microwave irradiation and gave styryl esters in good to moderate yields.

关键词： Styryl Ester Microwave Pd(OAc)2 as Catalyst Microwave Heating

Dual split and dislocation——a variant of Schatzker type-I tibial plateau fracture: A case report

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Chinese Journal of Traumatology 2022年第1期25卷 59-62页

作者： Devendra Kumar Chouhan aman Hooda Department of Orthopaedics Postgraduate Institute of Medical Education and ResearchChandigarhIndia

Schatzkter type-I tibial plateau fracture is a split fracture of the lateral tibial plateau in sagittal plane,consequent to valgus impaction caused by low velocity of ***,a deep understanding of the different columns of the tibial plateau and patho-mechanisms of the injury led to the unmasking of atypical fractures around the tibial *** have encountered 2 cases with unusual fracture pattern of the lateral tibial condyle caused by road traffic *** fracture pattern and severity of injury deviate from the original description of Schatzker type 1;in view of dual plane split,there is rotation of the posterolateral column fragment along its sagittal plane plus grade-III medial collateral ligament *** patients were initially treated with knee spanning external fixator and after a latency of 5 days,definitive fracture specific fixation was done,combined with repair of grade-III medial collateral ligament *** the 6 months follow-up both the patients achieved satisfactory knee functions(knee society score case 1:100 and case 2:92)and returned to their *** severity of fracture pattern and displacement as described should prompt for examination of associated ligament *** of timely diagnosis,early and appropriate care promised an excellent function outcome even in such a severe nature of knee *** prompt the description of injury pattern we coined the name"dual split and dislocation"of lateral tibial plateau,as a complex injury variant of split fracture of lateral tibial plateau fracture.

关键词： Tibial plateau fracture Schtazker classification Posterolateral Soft tissue injury

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气水体系甲烷水合物生成和分解动力学

化工进展 2020年第8期39卷 2954-2961页

作者：黄婷李长俊丁麟李清平 ZACHARY M aman 中海油研究总院有限责任公司北京100028 天然气水合物国家重点实验室北京100028 西南石油大学石油与天然气工程学院四川成都610500 中国石油勘探开发研究院北京100083 西澳大学机械与化学工程学院澳大利亚珀斯6009

为进一步探明搅拌对甲烷水合物生成和分解动力学特性的影响,借助容积约为522mL,最高操作压力21MPa的高压全透明反应釜装置,开展了不同搅拌条件下甲烷水合物的生成、分解和浆液流动实验,得到了搅拌对水合物生成量、生长速率和分解速率的... 详细信息

为进一步探明搅拌对甲烷水合物生成和分解动力学特性的影响,借助容积约为522mL,最高操作压力21MPa的高压全透明反应釜装置,开展了不同搅拌条件下甲烷水合物的生成、分解和浆液流动实验,得到了搅拌对水合物生成量、生长速率和分解速率的影响规律,基于搅拌电机扭矩值分析了不同搅拌速率下水合物浆液的流动特性。搅拌电机型号ViscoPakt Rheo-57,带有扭矩测量功能,测量最大范围57N·cm,精度±0.04N·cm。结果表明:在水合物开始快速生成的前期,水合物的最大生成量、最大生长速率及平稳生长速率都随搅拌速率的增大而增大,进一步验证了传质是控制水合物生成过程的首要因素;在水合物分解阶段,搅拌能提高水合物颗粒的分散性,促进分解气的运移产出;此外,不同搅拌速率下,水合物浆液的电机扭矩随着水合物体积分数的增大都呈现先保持平稳再逐渐增大最后剧烈波动的规律,由此得到了水合物浆液携带固相颗粒的临界体积分数。研究结论在一定程度上揭示了水合物的生长和分解机理,为动力学预测模型研究提供了参考。

关键词：水合物动力学搅拌流动特性甲烷

Seasonal Variability of the Buoyancy Flux along the Northern Coast of the Gulf of Guinea

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Atmospheric and Climate Sciences 2021年第2期11卷 363-372页

作者： Elisee Toualy Angora aman Marcel Silué Climate Tropical Team LASMES Université Felix Houphou&#235 t Boigny Abidjan C&#244 te d’Ivoire School of Science Engineering Technology and Mathematics (STEM) International University of Grand Bassam C&#244 te d’Ivoire

The buoyancy flux Bo at the air/sea interface is very useful to understand the variability of the stratification of the mixed layer, the oceanic mixing, the phytoplankton dynamics and then the coastal upwelling. The atmospheric reanalysis ERA5 and the oceanic reanalysis ORAP5 data have been used in this study to describe the sea surface Bo and, its influence on the variability of the mixing in the mixed layer and consequently on the coastal upwelling along the northern coast of the Gulf of Guinea. The Bo is negative along the coast and, is characterized by a seasonal variability dominated by the thermal buoyancy flux. This study has also shown that the mixing layer is very shallow along the coast and deeper offshore. The negative value of the Bo increases the stratification of the mixed layer and reduces the mixing. This could explain why the mixed layer is shallow in this region. This work suggests that an increasing trend of the global warming could have dramatic impact in this area by increasing the stratification in the mixed layer and would contribute to reducing the coastal upwelling intensity.

关键词： Gulf of Guinea Surface Buoyancy Flux Coastal Upwelling Thermal Buoy-ancy Flux Haline Buoyancy Flux Mixing Layer