Ultrasonic Bone Scalpel versus Conventional Methods for Osteotomy in Posterior Surgery for Cervical Spondylotic Myelopathy: A Review and Meta-Analysis

Bansal Parth,Kumar Vishal,Vatkar Arvind Janardhan,Gaurav Ankit,Dhatt Sarvdeep Singh 대한척추외과학회 2023 Asian Spine Journal Vol.17 No.5

Posterior methods for cervical myelopathy include laminoplasty and laminectomy with/without fusion. A more recent innovation in these treatments is the use of an ultrasonic bone shaver for osteotomy. In this study, we examined the perioperative results after laminectomy/laminoplasty between conventional methods (rongeur/high-speed drill) vs. piezosurgery-based instruments. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines were followed and the search was performed on four databases (PubMed, Scopus, EMBASE, and Google Scholar). Seven comparative studies were chosen after thorough screening by the authors and a meta-analysis was performed between piezosurgery and conventional technique to ascertain intraoperative and postoperative results after laminectomy/laminoplasty. The analysis includes four retrospective cohort studies and three randomized controlled trials published between 2015 and 2022. The mean age ranged from 55.5 to 64.2 years. Blood loss was significantly reduced in the piezosurgery group, other findings were not significant. On subgroup analysis, laminoplasty dramatically reduced blood loss and the rate of iatrogenic dural rips in the piezosurgery group. The use of ultrasonic bone shaver for osteotomy in cervical spondylotic myelopathy is related to significantly decreased blood loss and no significant increase in postoperative drainage, operative time, complication rate, and functional outcomes as compared to traditional techniques. We noticed significantly reduced blood and rate of dural tears in the laminoplasty subgroup with the use of ultrasonic bone shaver, which was not mirrored in the laminectomy subgroup. Careful intraoperative handling of the instrument can help prevent iatrogenic dural tears and nerve damage.

Transferring MBE-Grown Topological Insulator Films to Arbitrary Substrates and Metal–Insulator Transition via Dirac Gap

Bansal, Namrata,Cho, Myung Rae,Brahlek, Matthew,Koirala, Nikesh,Horibe, Yoichi,Chen, Jing,Wu, Weida,Park, Yun Daniel,Oh, Seongshik American Chemical Society 2014 NANO LETTERS Vol.14 No.3

<P>Mechanical exfoliation of bulk crystals has been widely used to obtain thin topological insulator (TI) flakes for device fabrication. However, such a process produces only microsized flakes that are highly irregular in shape and thickness. In this work, we developed a process to transfer the entire area of TI Bi<SUB>2</SUB>Se<SUB>3</SUB> thin films grown epitaxially on Al<SUB>2</SUB>O<SUB>3</SUB> and SiO<SUB>2</SUB> to arbitrary substrates, maintaining their pristine morphology and crystallinity. Transport measurements show that these transferred films have lower carrier concentrations and comparable or higher mobilities than before the transfer. Furthermore, using this process we demonstrated a clear metal–insulator transition in an ultrathin Bi<SUB>2</SUB>Se<SUB>3</SUB> film by gate-tuning its Fermi level into the hybridization gap formed at the Dirac point. The ability to transfer large area TI films to any substrate will facilitate fabrication of TI heterostructure devices, which will help explore exotic phenomena such as Majorana fermions and topological magnetoelectricity.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2014/nalefd.2014.14.issue-3/nl404363b/production/images/medium/nl-2013-04363b_0005.gif'></P>

Review on quantitation methods for hazardous pollutants released by e-cigarette (EC) smoking

Bansal, Vasudha,Kim, Ki-Hyun Elsevier 2016 Trends in analytical chemistry Vol.78 No.-

<P>Due to the growing popularity of e-cigarettes (ECs), the number of young EC smokers has increased since their introduction less than a decade ago. This development has alarmed public health experts, prompting researchers to identify potential hazards of EC use and to help establish guidelines or regulations for the pollutants contained in EC solutions and released in their smoke (such as particulate matter (PM), volatile organic compounds (VOCs), nicotine, polycyclic aromatic compounds (PAHs), carbonyls, and metals). This review was written to cover the techniques currently available for the collection and analysis of EC related pollutants. To this end, this review emphasizes the compositional diversity of the various components present in EC solutions and their smoke. The methods used to analyze different types of EC samples are also evaluated to help establish a standardized protocol for their accurate quantitation. (C) 2016 Elsevier B.V. All rights reserved.</P>

Influence of pulsed electric field and heat treatment on Emblica officinalis juice inoculated with Zygosaccharomyces bailii

Bansal, V.,Sharma, A.,Ghanshyam, C.,Singla, M.L.,Kim, K.H. The Institution ; Hemisphere Pub. Corp. [distribut 2015 Food and bioproducts processing Vol.95 No.-

The effects of pulsed electric field (PEF) applying 26kVcm<SUP>-1</SUP> with 1μs monopolar pulses (for 500μs) on inactivation of Zygosaccharomyces bailii and the stability for the key quality characteristics (vitamin C, phenolic content, antioxidant capacity, nonenzymatic index, 5-hydroxymethyl-2-furfural (HMF), <SUP>o</SUP>brix, and pH) in Emblica officinalis juice were studied. These results were then compared to those of heat treatment (90<SUP>o</SUP>C for 60s) up to 40 days on storing at 4<SUP>o</SUP>C. PEF treatment reduced 5.1log cycles of Z. bailii with decreases in HMF concentration and browning index relative to heat treated juice. Simultaneously, PEF treated juice retained 63% of vitamin C and 88.9% of antioxidant capacity (p<0.05). However, heat treated juice lowered 4.9log cycles of Z. bailii and exhibited significant degradation of vitamin C and antioxidant capacity (p<0.01). After all, both treatments did not induce any major changes in pH and <SUP>o</SUP>brix levels of emblica juice. Electron microscopy was used as a tool to find Z. bailii damage induced. Investigation of their morphology showed a leakage of cellular debris owing to the rupture of cell membrane of PEF treated Z. bailii. Thus, PEF treatment on emblica juice may offer an enormous potential for upgrading its quality than the heat processing method.

A community computational challenge to predict the activity of pairs of compounds

Bansal, Mukesh,Yang, Jichen,Karan, Charles,Menden, Michael P,Costello, James C,Tang, Hao,Xiao, Guanghua,Li, Yajuan,Allen, Jeffrey,Zhong, Rui,Chen, Beibei,Kim, Minsoo,Wang, Tao,Heiser, Laura M,Realubit Nature Publishing Group, a division of Macmillan P 2014 Nature biotechnology Vol.32 No.12

Recent therapeutic successes have renewed interest in drug combinations, but experimental screening approaches are costly and often identify only small numbers of synergistic combinations. The DREAM consortium launched an open challenge to foster the development of in silico methods to computationally rank 91 compound pairs, from the most synergistic to the most antagonistic, based on gene-expression profiles of human B cells treated with individual compounds at multiple time points and concentrations. Using scoring metrics based on experimental dose-response curves, we assessed 32 methods (31 community-generated approaches and SynGen), four of which performed significantly better than random guessing. We highlight similarities between the methods. Although the accuracy of predictions was not optimal, we find that computational prediction of compound-pair activity is possible, and that community challenges can be useful to advance the field of in silico compound-synergy prediction.

Gonadotrophin Releasing Hormone Analogues for Ovarian Function Preservation in Young Females Undergoing Chemotherapy

Bansal, Anshuma,Patel, Firuza Darius,Rai, Bhavana,Dhanireddy, Bhaswanth,Sharma, Suresh Chand Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.5

Chemotherapy has significantly improved the prognosis of cancer patients with various malignancies. However, female patients, especially those whoich are premenopausal, suffer from significant chemotherapy induced ovarian function impairment, which decreases their quality of life. Many new techniques for ovarian preservation have been established in recent years. Although the use of gonadotrophin releasing hormone analogues (GnRHa) for this purpose is not a new concept, its effectiveness in protection of ovarian function is still debatable. This article deals with studies and metaanalyses which have been undertaken in the past, demonstrating the impact of GnRHa in ovarian function preservation, and whether their use can be implemented in routine practice.

CERTAIN FORMULAS INVOLVING A MULTI-INDEX MITTAG-LEFFLER FUNCTION

Bansal, Manish Kumar,Harjule, P.,Choi, Junesang,Mubeen, Shahid,Kumar, Devendra The Youngnam Mathematical Society 2019 East Asian mathematical journal Vol.35 No.1

Since Mittag-Leffler introduced the so-called Mittag-Leffler function, a number of its extensions have been investigated due mainly to their applications in a variety of research subjects. Shukla and Prajapati presented a lot of formulas involving a generalized Mittag-Leffler function in a systematic manner. Motivated mainly by Shukla and Prajapati's work, we aim to investigate a generalized multi-index Mittag-Leffler function and, among possible numerous formulas, choose to present several formulas involving this generalized multi-index Mittag-Leffler function such as a recurrence formula, derivative formula, three integral transformation formulas. The results presented here, being general, are pointed out to reduce to yield relatively simple formulas including known ones.

Robustness of Predictive Density and Optimal Treatment Allocation to Non-Normal Prior for The Mean

Bansal, Ashok K.,Sinha, Pankaj The Korean Statistical Society 1993 Journal of the Korean Statistical Society Vol.22 No.2

The predictive density function of a potential future observation and its first four moments are obtained in this paper to study the effects of a non-normal prior of the unknown mean of a normal population. The derived predictive density function is modified to study changes in utility curves, used to choose the optimum treatment from a given set of treatments, at a given level of stimulus due to slight deviations from normality of the prior distribution. Numerical illustrations are provided to exhibit some effectsl.

Quantitative equivalence between polymer nanocomposites and thin polymer films

Bansal, Amitabh,Yang, Hoichang,Li, Chunzhao,Cho, Kilwon,Benicewicz, Brian C.,Kumar, Sanat K.,Schadler, Linda S. Nature Publishing Group 2005 Nature materials Vol.4 No.9

The thermomechanical responses of polymers, which provide limitations to their practical use, are favourably altered by the addition of trace amounts of a nanofiller. However, the resulting changes in polymer properties are poorly understood, primarily due to the non-uniform spatial distribution of nanoparticles. Here we show that the thermomechanical properties of ‘polymer nanocomposites’ are quantitatively equivalent to the well-documented case of planar polymer films. We quantify this equivalence by drawing a direct analogy between film thickness and an appropriate experimental interparticle spacing. We show that the changes in glass-transition temperature with decreasing interparticle spacing for two filler surface treatments are quantitatively equivalent to the corresponding thin-film data with a non-wetting and a wetting polymer–particle interface. Our results offer new insights into the role of confinement on the glass transition, and we conclude that the mere presence of regions of modified mobility in the vicinity of the particle surfaces, that is, a simple two-layer model, is insufficient to explain our results. Rather, we conjecture that the glass-transition process requires that the interphase regions surrounding different particles interact.

QUALITATIVE UNCERTAINTY PRINCIPLE FOR GABOR TRANSFORM

Bansal, Ashish,Kumar, Ajay Korean Mathematical Society 2017 대한수학회보 Vol.54 No.1

We discuss the qualitative uncertainty principle for Gabor transform on certain classes of the locally compact groups, like abelian groups, ${\mathbb{R}}^n{\times}K$, K ⋉ ${\mathbb{R}}^n$ where K is compact group. We shall also prove a weaker version of qualitative uncertainty principle for Gabor transform in case of compact groups.