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Diversity and Abundance of Pollinators Affecting Seed Production in Radish (Raphanus sativa)
Deepak Kumar Sharma,Dharam Pal Abrol 한국양봉학회 2023 韓國養蜂學會誌 Vol.38 No.4
Investigations were conducted to determine the impact of insect pollinators affecting seed production in Radish. Observations revealed that honey bees Apis cerana, A. mellifera, A. dorsata, A. florea were the important flower visitors and comprised more than 83 per cent of the flower visiting insects. Of all the honeybees, A. cerana was the most abundant followed by A. mellifera>A. dorsata>A. florea. The activity of honeybees increased with temperature and sunshine and decreased with relative humidity, wind speed, rainfall and evaporation. The influence of flowering seasonality had significant effect on population dynamics of bees as maximum population of all the bee species were observed after 12 days of flowering. Open pollination was found to be superior to both hand pollination and self pollination treatments. The number of siliquae produced, 1000 seed weight, seed yield per plant, and seed germination (%) was significantly higher in bee pollinated plots compared to open pollination and self pollination. Open pollination and hand pollination resulted in 118 and 76 per cent enhanced seed yield in radish as compared to control.
Deepak Sharma 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.6
In recent years, colloidal processing of advanced ceramics has received an increasing amount of attention in high-tech structural materials for their excellent mechanical properties. Rheological measurements are widely used to identify the nature and behavior of the dispersions, both as a means of studying their fundamental properties and as assessment of their suitability for particular technological purposes. Knowledge of their rheological behavior is essential for almost all dispersion in order to handle them satisfactorily. In this paper, we reviewed comprehensively those parameters which influence the rheological properties and the final assessment of the colloidal dispersion. These parameters allow a wide understanding of colloidal treatment for the process of disspersibility, which is useful way to predict and control a host of product properties, material behavior and end use performance.
Deepak Pathania,Gaurav Sharma,Mu. Naushad,Amit Kumar 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
A nanocomposite cation exchanger polyacrylamide Ce(IV) silicophosphate (PAM–CSP)was prepared via sol–gel method. The ion exchange capacity of nanocomposite PAM–CSP was found better (1.42 mequiv. g-1) than its inorganic counterpart Ce(IV) silicophosphate (CSP, 0.84 mequiv. g-1). The material was characterized using different techniques such as FTIR, XRD, SEM and TEM. The various physiochemical properties such as pH titration, elution concentration and elution behavior studies of PAM–CSP were studied. The pH titration studies clearly indicated the bifunctional nature of nanocomposite ion exchanger. The effect of temperature on the ion exchange capacity of the material was also investigated. The photocatalytic activity of PAM–CSP was investigated for the degradation of methylene blue dye which revealed that 83.40% of MB was degraded in 5 h. The antimicrobial activities of PAM–CSP were also ascertained against Escherichia coli and Staphylococcus aureus.
Conjoint Nerve Root an Intraoperative Challenge in Minimally Invasive Tubular Discectomy
Sharma Ayush,Singh Vijay,Agrawal Romit,Mangale Nilesh,Deepak Priyank,Savla Jeet,Jaiswal Ajay 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.4
Conjoint nerve root (CNR) is an embryological nerve root anomaly that mainly involves the lumbosacral region. The presence of CNR during tubular discectomy raises the chances of failure in spinal surgery and the risk of neural injuries. Tubular discectomy can be challenging in the presence of CNR owing to limited visualization. Here, we present a technical note on two cases of L5–S1 disc prolapse in the presence of conjoint S1 nerve root that was operated via a minimally invasive tubular approach. Any intraoperative suspicion of CNR while using the tubular approach should prompt the surgeon to perform a thorough tubular decompression prior to nerve root retraction. In patients with a large disc, disc should be approached via the axilla because the axillary area between the dura and the medial boarder of the root is very easy to approach in the presence of CNR. Safe performance of tubular discectomy is possible even in the presence of CNR in the lumbar spine.
Sharma Ayush,Shakya Akash,Singh Vijay,Deepak Priyank,Mangale Nilesh,Jaiswal Ajay,Marathe Nandan 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.4
Study Design: A prospective comparative study. Purpose: To compare the incidence of unintended durotomy and return to work after open surgery versus minimally invasive spine surgery (MIS) for degenerative lumbar pathologies. Overview of Literature: The incidence of accidental durotomy varies between 0.3% and 35%. Most of these are from open surgeries, and only a handful of studies have involved the MIS approach. No single-center studies have compared open surgery with MIS, especially in the context of early return to work and dural tear (DT). Methods: This study included 420 operated cases of degenerative lumbar pathology with a prospective follow-up of at least 6 months. Patients were divided into the open surgery and MIS groups, and the incidences of DT, early return to work, and various demographic and operative factors were compared. Results: A total of 156 and 264 patients underwent MIS and open surgery, respectively. Incidental durotomy was documented in 52 cases (12.4%); this was significantly less in the MIS group versus the open surgery group (6.4% vs. 15.9%, p<0.05). In the open surgery group, four patients underwent revision for persistent dural leak or pseudomeningocele, but none of the cases in the MIS group had revision surgery due to DT-related complications. The incidence of DT was higher among patients with high body mass index, patients with diabetes mellitus, and patients who underwent revision surgery (p<0.05) regardless of the approach. The MIS group returned to work significantly earlier. Conclusions: MIS was associated with a significantly lower incidence of DT and earlier return to work compared with open surgery among patients with degenerative lumbar pathology.