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( Kumar Sanjay ),( Urmil Tuteja ),( Kumari Sarika ),( Dhirendra Kumar Singh ),( Ashok Kumar ),( Om Kumar ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.1
The routine identification and differentiation of Brucella species is a time-consuming and labor-intensive process, which frequently places personnel at risk of laboratory-acquired infection. Here, we describe the development of a rapid multiplex PCR assay for the confirmation of presumptive Brucella isolates. The assay was able to identify and differentiate major human pathogens, namely B. abortus, B. melitensis, and B. suis, in a single test of less than an hour and a half.
Sanjay Kumar,Sujeet Kumar Singh Gautam,Devendra Gupta,Anil Agarwal,Sanjay Dhirraj,Sandeep Khuba 대한마취통증의학회 2016 Korean Journal of Anesthesiology Vol.69 No.1
Background: Valsalva maneuver reduces pain by activating sinoaortic baroreceptor reflex arc. We planned this study to evaluate the role of valsalva in attenuating spinal needle-puncture pain. Methods: Ninety American Society of Anesthesiologists (ASA) grade I and II enrolled patients undergoing elective surgery were randomized into 3 groups of 30 each. Group I (Control): didn’t blow; group II (Distraction): patients blew into rubber tube; Group III (Valsalva): blew into sphygmomanometer tube and raise mercury column up to 30 mmHg for at least 20 seconds. During above procedures, spinal puncture was performed with 25-gauge spinal needle. Results: Eighty-two patient data were analyzed. Incidence of spinal puncture pain was reduced to 10% (3 of 27) in Valsalva group as compared to 100% (28 of 28 in control group and 27 of 27 in Distraction group) observed in other two groups (P < 0.05). Severity of lumbar puncture pain as assessed by visual analog scale (0−10; where 0 is no pain and 10 is the worst imaginable pain) presented as Median (Interquartile range) were significantly reduced in the Valsalva group (0.0 [0.0] as compared to other 2 groups 2.0 [0.0] in the Distraction group and 3.0 [0.8] in Control group) (P < 0.05). Regarding time taken by CSF to fill spinal needle hub, there was no difference among the three groups (P > 0.05). None patient of all groups had post dural puncture headache (P > 0.05). Conclusions: Valsalva can be performed routinely in ASA I and II patients undergoing spinal anesthesia as it is safe, painless and non-pharmacological method of pain attenuation.
Computer-Aided Genetic Algorithm Based Multi-Objective Optimization of Laser Trepan Drilling
Sanjay Kumar,Avanish Kumar Dubey,Arun Kumar Pandey 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
The laser trepan drilling (LTD) has proven to produce better quality holes in advanced materials as compared with laser percussion drilling (LPD). But due to thermal nature of LTD process, it is rarely possible to completely remove the undesirable effects such as recast layer, heat affected zone and micro cracks. In order to improve the hole quality, these effects are required to be minimized. This research paper presents a computer-aided genetic algorithm-based multi-objective optimization (CGAMO) methodology for simultaneous optimization of multiple quality characteristics. The optimization results of the software CGAMO has been tested and validated by the published literature. Further, CGAMO has been used to simultaneously optimize the recast layer thickness (RLT) at entrance and exit in LTD of nickel based superalloy sheet. The predicted results show minimization of 99.82% and 85.06% in RLT at entrance and exit, respectively. The effect of significant process parameters on RLT has also been discussed.
Study of electronic structure and dielectric properties of Gd-doped cobalt nanoferrites
Kumar Arvind,Gora Mahendra Kumar,Kumar Sanjay,Choudhary Banwari Lal,Singhal Rishi Kumar,Dolia Satya Narain 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.81 No.9
The current article explores the dielectric and electronic properties of cobalt ferrite nanoparticles with Gd substitution in a series CoGdxFe2-xO4 (0≤x≤0.1, in step x=0.02) synthesized by the sol–gel self-combustion way. All the samples were studied with Fourier transform infra-red (FTIR) spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and impedance (dielectric) analyzer. One absorption band (υ1) was observed in FTIR measurements, which is the characteristic feature of spinel nanoferrites in fcc type structure. The presence of active Raman modes in Raman spectra at room temperature demonstrated single phase formation of cobalt nanoferrites with metallic–metallic and metallic–oxygen bonding vibrations in the tetrahedral and octahedral sites. XPS data analysis confrmed phase purity and revealed incorporation of Gd ion in the spinel fcc lattice. The valence states of Fe, Co & Gd atoms in all these nanoparticles are found as Fe3+, Co2+, & Gd3+. The dielectric constant and dielectric loss are measured in a broad frequency range of 100 Hz to 120 MHz. The dielectric constant reduces with a rise in Gd concentration and frequency. This study reveals that electronic and dielectric properties could be efectively tuned by varying concentrations of gadolinium in cobalt ferrite nanoparticles.
Surgical approaches to hepatic hydatidosis ranging from partial cystectomy to liver transplantation
Sanjay Goja,Sujeet Kumar Saha,Sanjay Kumar Yadav,Anisha Tiwari,Arvinder Singh Soin 한국간담췌외과학회 2018 Annals of hepato-biliary-pancreatic surgery Vol.22 No.3
Backgrounds/Aims: A wide range of surgical approaches has been described for hepatic hydatidosis aiming primarily at the reduction of disease recurrence and minimization of postoperative morbidity. Methods: A database analysis of patients with liver hydatidosis who underwent different surgical procedures between March 2010 and May 2016 was performed. Results: A total of 21 patients with cystic echinococcosis (CE) and four cases of alveolar echinococcosis (AED) were detected. Nine patients manifested recurrent disease at presentation. Among CE cases, 5 underwent partial cystectomy (2 laparoscopic and 3 open), 9 cysto-pericystectomy (7 open and 2 robotic) and 7 hepatectomies (1 central, 4 right, 1 left and 1 right trisectionectomy). Living donor liver transplantation was performed in 3 patients with AED and the fourth patient underwent right trisectionectomy with en bloc resection of hepatic flexure and right diaphragm. Seven developed Clavien grade II and three grade III complications. The mean follow-up of CE was 34.19±19.75 months. One patient of laparoscopic partial cystectomy developed disease recurrence at 14 months. No recurrence was detected at a mean follow-up of 34±4.58 months following LDLT and at 24 months following multivisceral resection for AED. Conclusions: The whole spectrum of tailored surgical approaches ranging from minimally invasive to open and extended liver resections represents safe, effective and recurrence-free treatment of hepatic hydatidosis.
Sanjay Kumar,H. K. Sharma 한국식품과학회 2012 Food Science and Biotechnology Vol.21 No.4
In present study, the effect of crude and commercial enzyme treatment on pineapple (Ananas comosus) juice yield, clarity, and viscosity was studied. A central composite face centered design was used to establish the optimum conditions for enzymatic hydrolysis of pineapple using crude enzyme. The optimized crude enzyme treatment conditions were incubation temperature 47oC, incubation time 446 min, and enzyme concentration 0.14 mL/50 g of pulp. The conditions for the commercial enzyme treatment of the same variety of pineapple to improve the juice recovery and quality were also optimized. The data showed that the crude enzyme was competitive to the commercial enzymes for the improvement of juice recovery and quality from pineapple. The comparison was done under optimized conditions using principal component analysis. As viscosity was the most uncorrelated variable, hence it can be used as a variable to study variance among samples treated by crude and commercial enzymes.
Sanjay Kumar Chaudhary 한국물학회 2017 한국물학회지 Vol.6 No.1
This presentation specifically deals with the summary information about Mahima Group in Tikapur. It further highlights the activities of Mahima group and the areas of work that Mahima group have accomplished in many regions specifically Tikapur. The presentation in general highlights the different aspects of Mahima group, its working modality and issues while working in the community. It is seen that how Mahima group is playing role for the wellbeing of women and young people in Tikapur. A very effective group of women who are involved in various aspects of society like income generation, environment, health issues, social issues identification and problem solving. The presentation highlights the activities that Mahima Group is involved in working in a community, how they run and also how they generate resource for the conduct Literacy classes, social awareness program and micro entrepreneurship program for the women group and community people especially Tharu community by involving them directly in "Mahima's Ho Hee Bakery". The presentation briefly highlights the actions of Mahima group members to collect fund for the continuation of the programs in community people for development of well being of the community. Mahima Group is very efficient in addressing various problems of society, encouraging people to start small income according to their interest and skills for their better lifestyle for well being life and human care in rural community like Tikapur.