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| 1 | 用于固态照明的Mn^4+离子光谱学显示文摘Mn^4+离子激活的荧光粉在固态照明领域作为红光发射的热点载体正日益受到关注。我们针对当前研究热度撰写了Mn^4+离子光谱学的回顾,并在回顾中聚焦了许多对红色荧光粉商业研制有价值的重要基础研究点。这些研究点涵盖了如何理解自由和晶场状态下Mn^4+离子的能级结构以及Mn^4+发射波长对基质的依赖关系。此外,我们就如何实验调控Mn^4+离子掺杂型荧光粉的发射波长和发光强度给出了许多实际可行的建议。更为重要的是,我们收集并讨论了100多种荧光粉基质中Mn^4+离子光谱学参数,对它们的理解将会为未来Mn^4+掺杂型红色荧光粉的实验开发奠定基础。 | BRIK Mikhail G 马崇庚 SRIVASTAVA Alok M PIASECKI Michal | 2020 | 发光学报2020，41，9： | 11 |
| 2 | Thermal decomposition and kinetics of plastic bonded explosives based on mixture of HMX and TATB with polymer matrices显示文摘This work describes thermal decomposition behaviour of plastic bonded explosives(PBXs) based on mixture of 1,3,5,7-tetranitro-1,3,5,7-tetrazocane(HMX) and 2,4,6-triamino-1,3,5-trinitrobenzene(TATB)with Viton A as polymer binder. Thermal decomposition of PBXs was undertaken by applying simultaneous thermal analysis(STA) and differential scanning calorimetry(DSC) to investigate influence of the HMX amount on thermal behavior and its kinetics. Thermogravimetric analysis(TGA) indicated that the thermal decomposition of PBXs based on mixture of HMX and TATB was occurred in a three-steps. The first step was mainly due to decomposition of HMX. The second step was ascribed due to decomposition of TATB, while the third step was occurred due to decomposition of the polymer matrices. The thermal decomposition % was increased with increasing HMX amount. The kinetics related to thermal decomposition were investigated under non-isothermal for a single heating rate measurement. The variation in the activation energy of PBXs based on mixture of HMX and TATB was observed with varying the HMX amount. The kinetics from the results of TGA data at various heating rates under non-isothermal conditions were also calculated by Flynn—Wall—Ozawa(FWO) and Kissinger-Akahira-Sunose(KAS)methods. The activation energies calculated by employing FWO method were very close to those obtained by KAS method. The mean activation energy calculated by FWO and KAS methods was also a good agreement with the activation energy obtained from single heating rate measurement in the first step decomposition. | Arjun Singh Tirupati C.Sharma Mahesh Kumar Jaspreet Kaur Narang Prateek Kishore Alok Srivastava | 2017 | Defence Technology(防务技术)2017，13，1： | 8 |
| 3 | Production and characterisation of new bioresorbable radiopaque Mg–Zn–Y alloy to improve X-ray visibility of polymeric scaffolds显示文摘For the medical diagnosis,radiopaque materials(RM)made from high specific gravity elements like Pt,Au,Ta,Iodine,Bromine are either attached or blended or coated on an implant to makes it detectable under X-ray/Fluoroscopy/CT-Scan.RM facilitate the surgeon in an operation theatre to position an implant during the surgery.Mainly,RM are non-degradable,thus in case of biodegradable implants,it may detach from the body and accumulate in vital organ cause serious health issue.Therefore,a new bioresorbable radiopaque material(BRM)was produced by alloying the high specific gravity elements Zn(35%w/w)and Y(4%w/w)with Mg metal.In this alloy,three main phases were identified,alpha Mg,Mg_(7)Zn_(3)and icosahedral quasicrystalline I-phase Mg3Zn6Y,which reinforce the Mg matrix.Hereafter,BRM was powdered to a size of less than 25 microns and blended in different ratios with bioresorbable poly-L-lactic acid(PLLA)for fabricating PLLA/BRM bio-composite.BRM microparticles were uniformly distributed and interfacial bonded with the matrix.The X-ray was passed through bio-composite to captureμCT radiograph for evaluating linear attenuation co-efficient(μ)and optical density(OD).Thermal analysis reveals that BRM particles act as a nucleating site and enhance the crystallinity of the polymeric chain.During the In Vitro accelerated degradation study,the alkaline nature of BRM neutralise the acidity of PLLA and balance the pH of the body fluid to reduce the inflammatory reactions,but this compromises the stability of the polymer as it increases the decomposition rate. | Alok Srivastava Naresh Bhatnagar | 2022 | Journal of Magnesium and Alloys2022，10，6： | 2 |
| 4 | Association of growth differentiation factor 15 (GDF15) polymorphisms with serum GDF15 and ferritin levels in β-thalassemia显示文摘 | Rekha Athiyarath Biju George Vikram Mathews Alok Srivastava Eunice S. Edison | 2014 | Annals of Hematology2014，，12： | 1 |
| 5 | Humidity sensing ; using polyaniline/Mn3O4 composite doped with organic/inorganic acids显示文摘 | SINGLA M L AWASTHI SAJEELA SRIVASTAVA ALOK | 2007 | Sensor and Actuators2007，，127： | 1 |
| 6 | Long-Term Cultured Human Term Placenta-Derived Mesenchymal Stem Cells of Maternal Origin Displays Plasticity显示文摘 | Vikram Sabapathy Saranya Ravi Vivi Srivastava Alok Srivastava Sanjay Kumar Rajarshi Pal | 2012 | Stem Cells International2012，，： | 1 |
| 7 | Humidity sensing; using polyaniline/Mn3O4 composite doped with organic/inorganic acids 显示文摘 | Singla M L Awasthi Sajeela Srivastava Alok | 2007 | Sensor and Actuators2007，127，： | 1 |
| 8 | Cytogenetic analysis of acute myeloid leukemia with t(8;21) from a tertiary care center in India with correlation between clinicopathologic characteristics and molecular analysis显示文摘 | Mayur Parihar J. Ashok Kumar Usha Sitaram Poonkuzhali Balasubramanian Aby Abraham Auro Viswabandya Biju George Vikram Mathews Alok Srivastava Vivi M. Srivastava | 2012 | Leukemia & Lymphoma2012，，1： | 1 |
| 9 | Studies on heat stabilized wheat germ and its influence on rheological characteristics of dough显示文摘 | Alok K Srivastava M L Sudha V Baskaran | 2007 | European Food Research and Technology2007，224，3： | 1 |
| 10 | Studies on heat stabilized wheat germ and its influence on rheologieal characteristics of dough 显示文摘 | Srivastava Alok K Sudha M L Baskaran V | 2007 | European Food Research and Technology2007，224，3： | 1 |
| 11 | Humidity sens ing; using polyaniline/Mn3O4 composite doped with organic/inorganic acids显示文摘 | M L Singla Sajeela Awasthi Alok Srivastava | 2007 | Sensors and Actuators B2007，172，2： | 1 |
| 12 | Second lw (exergy) analysis of various types of coal 显示文摘 | Alok Srivastava | 1988 | Energy Conversion1988，28，2： | 1 |
| 13 | Studies on heat stabilized wheat germ and its influence on rheological characteristics of dough显示文摘 | Alok K. Srivastava M. L. Sudha V. Baskaran K. Leelavathi | 2007 | European Food Research and Technology2007，，3： | 1 |
| 14 | Studies on heat stabilized wheat germ and its influence on theological characteristics of dough 显示文摘 | Alok K Srivastava M L Sudha V Baskaran | 2007 | European Food Research and Technology2007，224，3： | 1 |
| 15 | Upper ocean high resolution regional modeling of the Arabian Sea and Bay of Bengal显示文摘In this paper, effort is made to demonstrate the quality of high-resolution regional ocean circulation model in realistically simulating the circulation and variability properties of the northern Indian Ocean(10°S–25°N,45°–100°E) covering the Arabian Sea(AS) and Bay of Bengal(BoB). The model run using the open boundary conditions is carried out at 10 km horizontal resolution and highest vertical resolution of 2 m in the upper ocean.The surface and sub-surface structure of hydrographic variables(temperature and salinity) and currents is compared against the observations during 1998–2014(17 years). In particular, the seasonal variability of the sea surface temperature, sea surface salinity, and surface currents over the model domain is studied. The highresolution model's ability in correct estimation of the spatio-temporal mixed layer depth(MLD) variability of the AS and BoB is also shown. The lowest MLD values are observed during spring(March-April-May) and highest during winter(December-January-February) seasons. The maximum MLD in the AS(BoB) during December to February reaches 150 m (67 m). On the other hand, the minimum MLD in these regions during March-April-May becomes as low as 11–12 m. The influence of wind stress, net heat flux and freshwater flux on the seasonal variability of the MLD is discussed. The physical processes controlling the seasonal cycle of sea surface temperature are investigated by carrying out mixed layer heat budget analysis. It is found that air-sea fluxes play a dominant role in the seasonal evolution of sea surface temperature of the northern Indian Ocean and the contribution of horizontal advection, vertical entrainment and diffusion processes is small. The upper ocean zonal and meridional volume transport across different sections in the AS and BoB is also computed. The seasonal variability of the transports is studied in the context of monsoonal currents. | Dwivedi Suneet Mishra Alok Kumar Srivastava Atul | 2019 | Acta Oceanologica Sinica2019，38，5： | 1 |
| 16 | Feasibility of one-shot dilation access in the pediatric age group显示文摘Objective To compare sequential fascial dilation(SFD)versus one-shot dilation(OSD)in the pediatric patients undergoing percutaneous nephrolithotomy.Methods The present study is an observational study.The study subjects were divided into two groups.In group 1,renal dilation was done using the SFD and in group 2,renal dilation was done using the OSD.The amount of time exposed to radiation during access to pelvicalyceal system was estimated.Complications,stone free rates,ancillary procedures for residual stones and hospital stay were compared.Modified Clavien-Dindo classification was used for grading the complications.Results Radiation exposure and operative time were less in OSD group(95%confidence interval(CI)3.068 to 14.072,and 2.565 to 12.435,p<0.005).The mean drop of hematocrit was statistically less significant in OSD group(p=0.032).In both groups,complications,stone free rate and hospital stay were statistically insignificant.Conclusions OSD is feasible in the children with reduced radiation exposure and shorter operative time.The outcome was similar to SFD. | Alok Srivastava Krishna Kumar Yadav Anjana Singh Anoop Kumar Srivastava Sanjeet Kumar Singh | 2022 | World Journal of Pediatric Surgery2022，5，1： | 0 |
| 17 | Enhanced osseointegration of drug eluting nanotubular dental implants: An in vitro and in vivo study显示文摘Faster and predictable osseointegration is crucial for the success of dental implants, especially in patients with compromised local or systemic conditions. Despite various surface modifications on the commercially available Titanium (Ti) dental implants, the bioactivity of Ti is still low. Thus, to achieve both biological and therapeutic activity on titanium surfaces, surface modification techniques such as titanium nanotubes have been studied as nanotube surfaces can hold therapeutic drugs and molecules. The main aim of the present research work is to study the early osseointegration around the novel Simvastatin drug eluting nanotubular dental implant. In the present research, the titanium nanotubes were fabricated on the screw-shaped dental implant surface and the Simvastatin drug was loaded into the nanotubes using the ultrasonication dip method. In vitro and In vivo studies were carried out on the modified dental implants. In vitro cell culture study reported enhanced osteogenic activity on the drug-loaded nanotube surface implants. The in vivo animal studies were evaluated by micro-CT, histopathology, and reverse torque removal analysis methods. The test results showed faster osseointegration with the strong interface on the Simvastatin drug-loaded implant surface at 4 weeks of healing as compared to the control implants. | Pankaj Chauhan Alok Srivastava Pooja Bhati Manish Chaturvedi Vinay Patil Sriram Kunnoth Nisha Kumari Vedpal Arya Madhur Pandya Mohit Agarwal Smiti Bhardwaj Farrukh Faraz Sanjay Chauhan Mahesh Verma Veena Koul Naresh Bhatnagar | 2023 | Bioactive Materials2023，，10： | 0 |
| 18 | Clinical outcome of orbital apex syndrome in COVID associated mucormycosis patients in a tertiary care hospital显示文摘AIM: To share clinical pattern of presentation, the modalities of surgical intervention and the one month postsurgical outcome of rhino-orbito-mucormycosis(ROCM) cases.METHODS: All COVID associated mucormycosis(CAM) patients underwent comprehensive multidisciplinar y examination by ophthalmologist, otorhinolaryngologist and physician. Patients with clinical and radiological evidence of orbital apex involvement were included in the study. Appropriate medical and surgical intervention were done to each patient. Patients were followed up one-month post intervention. RESULTS: Out of 89 CAM patients, 31(34.8%) had orbital apex syndrome. Sixty-six(74.2%) of such patients had pre-existing diabetes mellitus, 18(58%) patients had prior documented use of steroid use, and 55(61.8%) had no light perception(LP) presenting vision. Blepharoptosis, proptosis, complete ophthalmoplegia were common clinical findings. Seventeen(19.1%) of such patients had variable amount of cavernous sinus involvement. Endoscopic debridement of paranasal sinuses and orbit with or without eyelid sparing limited orbital exenteration was done in most cases, 34(38.2%) patients could retain vision in the affected eye. CONCLUSION: Orbital apex involvement in CAM patients occur very fast. It not only leads to loss of vision but also sacrifice of the eyeball, orbital contents and eyelids. Early diagnosis and prompt intervention can preserve life, vision and spare mutilating surgeries. | Smiti Rani Srivastava Purban Ganguly Debasis Barman Sudip Das Manimoy Bandyopadhyay Asim Kumar Ghosh Subhra Sarkar Amitabha Sengupta Sarbari Swaika Pritam Chatterjee Amit Kumar Gupta Alok Ranjan Mondal Soumyajit Guha Sinjita Dutta Souvik Adhikari Aditi Kaushik Partha Sundar Biswas Asif Ayub | 2022 | International Journal of Ophthalmology(English edition)2022，15，4： | 0 |
| 19 | 各种煤的热力学第二定律分析显示文摘0 前言不可回收的能源耗尽及其高成本迫使工程师们再考虑如何合理有效地利用能源这一问题。通常的第一定律分析,尽管必要,但不能给出能源系统各组成的极限和潜力的完整结构。因此,这可能会导致不恰当的设备设计及匹配。第二定律分析可决定希望能源装置或工艺所作的最大功,例如由于电能几乎可完全转化成机械功,因此它的质量比热能高。能源装置和工艺的第二定律分析不是新兴的,可追溯到上一世纪。但是,直到最近。 | Alok Srivastava 张剑锋 | 1989 | 煤炭综合利用译丛1989，，3： | 0 |
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