Elastic characteristics of hand-tufted carpets under compressive load

This paper reports the study on dynamic-mechanical properties of nine hand-tufted cut pile carpet samples (80/20wool/nylon blended pile yarn) with different structural parameters. The influence of two structural parameters, viz. carpetpile density and pile height on the carpet pile deformation properties has been studied. Carpet samples are tested forcompression and thickness recovery, considering pressure ranging from 2 kPa to 200 kPa. The findings are statisticallyanalyzed using general linear model through regression analysis. It is observed that both these structural parameters have asignificant influence on compression and recovery properties of selected carpet samples

Performance of wool-nylon cut pile carpets in relation to their structural parameters

The change in performance parameters of hand-tufted cut-pile carpets has been studied with respect to variation in their constructional parameters. Carpet samples are prepared from 80/20 wool-nylon blended pile yarn by varying pile density and pile height. The influence on deformation, abrasion and tuft withdrawal force properties has been investigated. Carpet samples are evaluated for compression, abrasion and tuft withdrawal force. The experimental results are statistically analyzed using general linear model through regression analysis and analysis of variance. From the statistical analysis of test results, it has been established that the carpet structural parameters, such as pile height and pile density, have a significant influence on thickness loss, recovery under compression and durability properties of hand-tufted carpets

Performance of wool-nylon cut pile carpets in relation to their structural parameters

182-185The change in performance parameters of hand-tufted cut-pile carpets has been studied with respect to variation in their constructional parameters. Carpet samples are prepared from 80/20 wool-nylon blended pile yarn by varying pile density and pile height. The influence on deformation, abrasion and tuft withdrawal force properties has been investigated. Carpet samples are evaluated for compression, abrasion and tuft withdrawal force. The experimental results are statistically analyzed using general linear model through regression analysis and analysis of variance. From the statistical analysis of test results, it has been established that the carpet structural parameters, such as pile height and pile density, have a significant influence on thickness loss, recovery under compression and durability properties of hand-tufted carpets

Design, implementation, and evaluation of parallell pipelined STAP on parallel computers

Performance results are presented for the design and implementation of parallel pipelined space-time adaptive processing (STAP) algorithms on parallel computers. In particular, the issues involved in parallelization, our approach to parallelization, and performance results on an Intel Paragon are described. The process of developing software for such an application on parallel computers when latency and throughput are both considered together is discussed and tradeoffs considered with respect to inter and intratask communication and data redistribution are presented. The results show that not only scalable performance was achieved for individual component tasks of STAP but linear speedups were obtained for the integrated task performance, both for latency as well as throughput. Results are presented for up to 236 compute nodes (limited by the machine size available to us). Another interesting observation made from the implementation results is that performance improvement due to the assignment of additional processors to one task can improve the performance of other tasks without any increase in the number of processors assigned to them. Normally, this cannot be predicted by theoretical analysis

Regional Anaesthesia with Non Invasive Ventilation and Conscious Sedation: An Alternative to General Anaesthesia in Morbidly Obese Patients with Obstructive Sleep Apnea in Retrograde Intrarenal Surgery

Obstructive sleep apnea(OSA) is a syndrome characterized by obstruction in the upper airway during sleep. OSA patients undergoing procedures under GA are at increased risk for hypoxemia, pneumonia, difficult intubation, atelactasis, myocardial infarction making it a challenge for anesthesiologist. Retrograde intrarenal surgery(RIRS) is normally performed under GA to prevent respiratory embaracement. There are very few studies focusing on Regional anesthesia in RIRS procedure. A Sixty-three-year-old male known case of morbid obesity (BMI- 35 kg/meter square), OSA (on CPAP support at night) presented with left renal pelvis calculus, STOP BANG score (=5) therefore making it a case of difficult airway. Respiratory discomfort improved at 30-35-degree head up due to existing OSA considering the severe OSA and anticipated difficult airway, the surgery was planned under Lumbar subarachnoid block with preparation for management of difficult airway if conversion to GA required. 3 ml of 0.5 percent Bupivacaine heavy and 25 mcg fentanyl injected into subarachnoid space. T6 level block acheived after 3 minutes. The patient was put on his home CPAP machine with 5cm H2O PEEP. The patient was maintained on sponatneous ventilation and monitored using Etco2 at aliquot of 1mg midazolam given to mimic natural sleep pattern. The surgery was uneventful and the risk of induction of GA and difficult intubation was succesfully avoided. Patient with regional anaesthesia who are prone to converted to GA due to multiple risk factors, i.e., OSA with anticipated difficult airway can create a chaotic situation. So as a preliminary step NIV can be used, and along with it, mild sedation can be supplemented to improve acceptance and to avoid asynchrony. In this case NIV was used as a preemptive ventilation strategy even before actual requirement of BiPAP by mimicing the natural sleep pattern and make patient comfortable while a smooth conductance of the procedure

Efforts and strategies for alleviation of drought tolerance in chickpea in India

Among the various cool season pulses grown in India, chickpea (Cicer arietinum L.) occupies an important position in rainfed agriculture. Chickpea is largely grown (>67% area) on conserved/ residual moisture, contributing about 45% to the total pulses production in India. Being a rainfed crop, it often faces terminal drought stress. When chickpea sowing is delayed in fields vacated by paddy in the presence of terminal heat, soil moisture stress further limits its productivity. This necessitates the adoption of suitable strategies to alleviate per se drought tolerance in chickpea. Two main strategies, integrated breeding and transgenic technology, have been adopted for developing drought-tolerant varieties. The third potential strategy is utilization of nanotechnology, which has not been tried under Indian NARES. Systematic breeding efforts resulted in development of varieties having per se drought tolerance (RSG 44, Vijay, RSG 888, JG 74, Pusa 2024), and escape (JG 11, JG 16, JSC 56, IPC 2006-77 etc.) exploiting earliness. QTLs responsible for drought tolerance have been identified in chickpea genotype ICC 4958, which have been transferred, and drought-tolerant elite breeding lines have been developed. MAGIC and NAM populations combining drought and heat tolerance are now becoming available for identification of elite breeding lines having combined tolerance to both stresses for their possible release. Exploitation of transgenic technology using DREB gene has also shown promise. The use of nano-particles in enhancing root development and growth vigour in chickpea has opened the doors for exploitation of nanotechnology for alleviation of per se drought tolerance

Elastic characteristics of hand-tufted carpets under compressive load

51-55This paper reports the study on dynamic-mechanical properties of nine hand-tufted cut pile carpet samples (80/20 wool/nylon blended pile yarn) with different structural parameters. The influence of two structural parameters, viz. carpet pile density and pile height on the carpet pile deformation properties has been studied. Carpet samples are tested for compression and thickness recovery, considering pressure ranging from 2 kPa to 200 kPa. The findings are statistically analyzed using general linear model through regression analysis. It is observed that both these structural parameters have a significant influence on compression and recovery properties of selected carpet samples

Do environmentally induced DNA variations mediate adaptation in Aspergillus flavus exposed to chromium stress in tannery sludge?

Abstract Background Environmental stress induced genetic polymorphisms have been suggested to arbitrate functional modifications influencing adaptations in microbes. The relationship between the genetic processes and concomitant functional adaptation can now be investigated at a genomic scale with the help of next generation sequencing (NGS) technologies. Using a NGS approach we identified genetic variations putatively underlying chromium tolerance in a strain of Aspergillus flavus isolated from a tannery sludge. Correlation of nsSNPs in the candidate genes (n = 493) were investigated for their influence on protein structure and possible function. Whole genome sequencing of chromium tolerant A. flavus strain (TERIBR1) was done (Illumina HiSeq2000). The alignment of quality trimmed data of TERIBR1 with reference NRRL3357 (accession number EQ963472) strain was performed using Bowtie2 version 2.2.8. SNP with a minimum read depth of 5 and not in vicinity (10 bp) of INDEL were filtered. Candidate genes conferring chromium resistance were selected and SNPs were identified. Protein structure modeling and interpretation for protein-ligand (CrO4 − 2) docking for selected proteins harbouring non-synonymous substitutions were done using Phyre2 and PatchDock programs. Results High rate of nsSNPs (approximately 11/kb) occurred in selected candidate genes for chromium tolerance. Of the 16 candidate genes selected for studying effect of nsSNPs on protein structure and protein-ligand interaction, four proteins belonging to the Major Facilitator Superfamily (MFS) and recG protein families showed significant interaction with chromium ion only in the chromium tolerant A. flavus strain TERIBR1. Conclusions Presence of nsSNPs and subsequent amino-acid alterations evidently influenced the 3D structures of the candidate proteins, which could have led to improved interaction with (CrO4 − 2) ion. Such structural modifications might have enhanced chromium efflux efficiency of A. flavus (TERIBR1) and thereby offered the adaptation benefits in counteracting chromate stress. Our findings are of fundamental importance to the field of heavy-metal bio-remediation