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Case Reports in Clinical Medicine 2015年第6期4卷 222-226页

作者： Amarjit singh kuldip singh sidhu Shivaji Rai Department of Cardio-Thoracic and Vascular Surgery Government Medical College Amritsar India

An 18 years old female patient was given a test dose of Benzyl penicillin in the Antecubital Area on the right forearm by a staff nurse of the department. After the injection, the patient complained of severe pain in the right forearm distal to the injection site. This was followed by blanching of the right forearm and hand. She was immediately heparinised followed by other symptomatic treatments. After 12 hours, a bluish discoloration developed on the hand, both on dorsal and palmar aspect, sparing the thumb. This recovered with medication, except the late development of dry gangrene of the tip of distal phalanx of the little finger which got shrivelled later on. Color Doppler flow study, echocardiography, and CT angiography of the right upper limb were done. Understanding of the pathogenesis and prompt action can help in saving a limb. Education of the medical professionals involved in administering injection is necessary so that they become aware of abnormal course or anomalous anatomy of vessels of upper limb. This can help to prevent the complications.

关键词： Intra-Arterial Injection Gangrene Anomalous Anatomy

An analysis of energy consumption and carbon footprints of cryptocurrencies and possible solutions

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Digital Communications and Networks 2023年第1期9卷 79-89页

作者： Varun Kohli Sombuddha Chakravarty Vinay Chamola kuldip singh Sangwan Sherali Zeadally Department of Electrical and Computer Engineering Engineering National University of SingaporeSingapore Department of Electrical and Electronics Engineering&APPCAIR BITS-PilaniPilani Campus333031India Department of Mechanical Engineering BITS-PilaniPilani Campus333031India College of Communication and Information University of KentuckyLexingtonKY40506-0224USA

There is an urgent need to control global warming caused by humans to achieve a sustainable ***_(2) levels are rising steadily,and while countries worldwide are actively moving toward the sustainability goals proposed during the Paris Agreement in 2015,we are still a long way to go from achieving a sustainable mode of global *** increased popularity of cryptocurrencies since the introduction of Bitcoin in 2009 has been accompanied by an increasing trend in greenhouse gas emissions and high electrical energy *** energy tracking studies(e.g.,Digiconomist and the Cambridge Bitcoin Energy Consumption Index(CBECI))have estimated energy consumption ranges from 29.96 TWh to 135.12 TWh and 26.41 TWh to 176.98 TWh,respectively for Bitcoin as of July 2021,which are equivalent to the energy consumption of countries such as Sweden and *** latest estimate by Digiconomist on carbon footprints shows a 64.18 MtCO_(2) emission by Bitcoin as of July 2021,close to the emissions by Greece and *** review compiles estimates made by various studies from 2018 to *** compare the energy consumption and carbon footprints of these cryptocurrencies with countries around the world and centralized transaction methods such as *** identify the problems associated with cryptocurrencies and propose solutions that can help reduce their energy consumption and carbon ***,we present case studies on cryptocurrency networks,namely,Ethereum 2.0 and Pi Network,with a discussion on how they can solve some of the challenges we have identified.

关键词： Blockchain Carbon footprint Climate change Cryptocurrency Sustainability

Methods of Abortion in First and Second Trimester

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Open Journal of Obstetrics and Gynecology 2014年第15期4卷 924-929页

作者： Li Min Lim kuldip singh Department of Obstetrics and Gynaecology National University Hospital Singapore City Singapore

Background: Medical and surgical methods are available for abortions in both the first and second trimester. Aim: To review the evidence base and current recommendations for available methods of abortions in first and second trimesters. Methods: Extensive literature search and review of available guidelines?were?done. Results: In the first trimester, medical methods are recommended below 7 weeks gestation while vacuum aspiration is an appropriate method between 7 to 12 weeks gestation. In the second trimester, the three methods of abortion available are dilatation and evacuation, intrauterine instillation of abortifacients and administration of systemic abortifacients. Conclusion: The choice of techniques depends on many factors including uterine volume, operator experience, patient preference, medical history and indication for abortion.

关键词： Abortion Surgical Medical Trimester

Pulsatile MHD Flow in an Inclined Catheterized Stenosed Artery with Slip on the Wall

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Journal of Biomedical Science and Engineering 2014年第4期7卷 194-207页

作者： Mukesh Kumar Sharma kuldip singh Seema Bansal Department of Mathematics Guru Jambheshwar University of Science & Technology Hisar India

Catheter is commonly used by the surgeons for various reasons in the treatment of a patient suffering with cardiovascular diseases. Catheterization increases the mean flow resistance in the arterial blood flow and many other complications are associated with the presence of catheter in the artery. Effects of catheter in stenosed artery can be estimated non-invasively by means of hemo-dynamic indicator-WSS, WSSG, volume flow rate and impedance. The effect of slip at the arterial wall, inclination of the artery and magnetic field on the hemodynamic indicators and flow profiles are computed, presented and discussed through graphs.

关键词： Stenosed Artery Wall Shear Stress Wall Shear Stress Gradient Impedance Catheter

Study on Epidemiological Profile, Clinical Profile, and Angiographic Patterns in Acute Coronary Syndrome Patients in a Tertiary Health Care Center in Haryana

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World Journal of Cardiovascular Diseases 2024年第10期14卷 664-680页

作者： Ghritachi Sandal kuldip singh Laller Ashwani Kumar Yadav Sunil Kumar Bamel Cardiology Department Pt. Bhagwat Dayal Sharma University of Health Sciences Rohtak Haryana India Cardiology Department Positron Hospital Rohtak Haryana India

Background: Cardiovascular diseases are the leading cause of death in India, with coronary artery disease (CAD) accounting for a majority of the deaths. There are few large registries on acute coronary syndrome (ACS) from India. Our aim is to study the clinical and epidemiological profile of ACS PATIENTS presenting to our institute, including their angiographic features. Methods: This hospital-based observational, single tertiary care center, prospective study was conducted on patients admitted in the Department of Cardiology at a tertiary care center in Haryana. The study included 400 patients aged greater than 18 years who were admitted with the diagnosis of ACS, and it was carried out for 1 year. The epidemiological profile, clinical history, risk factors, electrocardiogram findings, and angiographic pattern were studied and analyzed with appropriate statistical tools. Results: The mean age of the study population was 55.12 ± 11.78 years. Male and female ratio was 2.4:1. The majority of the patients came from rural background (80%);24% of the patients were illiterate. Smoking was the most common risk factor (51.5%) in our study population followed by hypertension (40%) and diabetes (28%). Unstable angina was the most common type of ACS, which was found in 68.25% of patients. Premature CAD was found in 27.8% of patients and obstructive CAD was found in 63% of patients. Coronary angiography revealed that 39% had single vessel disease (SVD), 23.5% had double vessel disease (DVD), and 27.5% had triple vessel disease (TVD). LAD was more commonly involved, followed by RCA and LCX. Within the first 24 hours, 67% of patients sought medical assistance and only 38.5% received definitive treatment, suggesting a delay in seeking definitive treatment in our study population. Conclusion: The study suggests that unstable angina is the most common form of ACS in the study population, which is mostly of rural background with significant delay in seeking medical help. Smoking is t

关键词： Acute Coronary Syndrome Angiographic Pattern Unstable Angina

Growth and Fabrication of GaN/InGaN Violet Light Emitting Diode on Patterned Sapphire Substrate

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Journal of Applied Mathematics and Physics 2014年第12期2卷 1113-1117页

作者： Sonachand Adhikari Saroj Kanta Patra Ashok Lunia Sandeep Kumar Priyavart Parjapat Bhoopendra Kushwaha Pawan Kumar Sumitra singh Ashok Chauhan kuldip singh Suchandan Pal C. Dhanavantri CSIR-Network of Institutes for Solar Energy (CSIR-NISE) CSIR-Central Electronics Engineering Research Institute (CSIR-CEERI) Pilani Rajasthan India Academy of Scientific and Innovative Research (AcSIR) Chennai Tamil Nadu India

GaN/InGaN based violet light emitting diodes (LEDs), emitting at 430 nm, have been grown on conventional single side polished (SSP) and patterned sapphire substrates (PSS). Characteristics of the epitaxial wafers and subsequently fabricated LEDs have been analyzed. The photoluminescence (PL) peaks have been observed at 428.1 nm 426.1 nm for the epitaxial layers on SSP and PSS respectively. The PL intensity is 2.9 times higher in the case of PSS. The electroluminescence (EL) peaks have been observed at 430.78 nm and 430.35 nm for the LEDs on SSP and PSS respectively. The light output from LED fabricated on the PSS is 2.15 times higher than that of the LED on SSP at a forward current of 100 mA.

关键词： LED GaN/InGaN PSS