मैत्रेयी पुष्पा के उपन्यासों में नारी पात्र

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Mathematical Modeling and Experimental Study of Dynamics and Structure Development during High Speed Melt Spinning of Nylon-6

A mathematical model was developed to describe the high speed melt spinning behavior of nylon-6. This model is based on the equations of continuity, momentum and energy. These equations are combined with a Newtonian model for rheology to describe the process dynamics and models for the development of birefringence, molecular orientation and crystallization kinetics to describe the structure formation during high speed melt spinning of nylon-6. Physical property relationships from the literature are input and used together with the processing conditions to calculate velocity, diameter, temperature, stress, birefringence and crystallinity profiles along the spinline. Online experimental techniques were used to obtain actual temperature, diameter and birefringence profiles. Two different molecular weight resins and two different mass throughputs were studied. Comparison of model predictions with experimental profiles showed that the trends predicted by the model were consistent qualitatively, but there were quantitative disagreements. To obtain quantitative agreement, an analytical inversion procedure was developed in which online experimental data were utilized to generate key relationships for elongational viscosity and heat transfer coefficients. Utilization of these relationships in the model, provided a good agreement between experimental and predicted diameter and temperature profiles in the absence of crystallization. Subsequent adjustment in the parameter that controls the effect of orientation on crystallization rate provided good agreement between experimental and predicted diameter, temperature and birefringence profiles, including the effects of crystallization with molecular orientation. The model predictions and online experimental profiles indicate that high spinning speeds produced high spinline stresses and increased molecular orientation which induced crystallization in the spinline. Increasing the molecular weight of the resin produced higher spinline stresses (due to high melt viscosity) and induced online crystallization at a lower critical take-up velocity or at a higher temperature and smaller distance from the spinneret at chosen high take-up velocities. Under some spinning conditions (high speeds and lower throughput) the energy released by crystallization increased the local filament temperature which decreased the melt viscosity, allowing rapid local deformation or neck formation in the spinlin

A Cost-Based Allocation of Inspection Efforts in Quality Control of a Multistage Assembly Line: A Case Study of an Electronics Assembly Line

Firms within the electronics manufacturing industry is often a high-volume high-mix product manufacturing industry. This study presents a cost-based allocation of inspection efforts in quality control of a sequential multi-stage electronic assembly line, considering all relevant costs and proposes the optimum inspection strategy. A dynamic sampling plan is incorporated in the model to maintain the desired quality levels. Monte-Carlo simulation is used to obtain the solution of this complex model. The model is created based on an actual electronics packaging company. This approach provides the ability to minimize the costs and does not sacrifice the quality of the products. The input factors that significantly affect the costs are identified so that they can be optimized for performance improvement and decision-making

Scar endometriosis: a case report of this uncommon entity

Scar endometriosis is an infrequent type of extra pelvic endometriosis that is associated with obstetrical and gynecological surgeries. Incidence of scar endometriosis is 0.03-0.1%. It is mostly confused with other dermatological or surgical conditions like stitch granuloma, dermoid, abscess and delays the diagnosis. The symptoms are nonspecific like pain over incision site during menstruation. Scar endometriosis is seen commonly following surgeries like caesarean deliveries, hysterectomies, hysterotomies, laparoscopic surgeries, episiotomy and amniocentesis tract. We present here a case of abdominal wall endometriosis in a woman who has undergone caesarean delivery six years prior to her current presentation. The epidemiology, pathogenesis, clinical features, diagnosis, treatment and methods of prevention of this somewhat rare condition are discusse

A Mixed Method Comparison: Instruction in Undergraduate Beginning, Intermediate, and Advanced Contemporary Dance Classes

This study aimed to identify the nature of instructional differences between beginning, intermediate and advanced contemporary dance classes. The study involved interviewing two dance instructors and observing their classes, as well as conducting focus group discussions to gain insight from students. Despite difficulties in comparing across three levels given that no single instructor was observed teaching all three levels, the mixed method comparison yielded some common themes at each dance level. Given that students at higher levels were more aware of and comfortable with their bodies, instructors moved through the class at a quicker pace. Students at each level were challenged in different ways whether it was in movement execution, feeling the movement or developing artistry in expression. While students at all levels were offered opportunities for improvisation, the nature of the constraints were very different, demanding increasing creativity and imagination at the higher levels. Both instructors were able to open space for self and student reflection in the classes they taught. While this contributed to students being aware of their responsibilities as dancers and as dance students. It was also evident that with increased proficiency, students at the intermediate level were more verbally articulate compared to beginning students. The advanced students were better equipped to implement feedback or new ideas quickly when compared to intermediate students

પશ્ર્ચિમ ભારતની સંસ્કૃત પત્રકારિતાનું વિશ્ર્લેષણાત્મક પરિશીલન

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Positive Reciprocal Regulation of Ubiquitin C-Terminal Hydrolase L1 and β-Catenin/TCF Signaling

Deubiquitinating enzymes (DUBs) are involved in the regulation of distinct critical cellular processes. Ubiquitin C-terminal Hydrolase L1 (UCH L1) has been linked to several neurological diseases as well as human cancer, but the physiological targets and the regulation of UCH L1 expression in vivo have been largely unexplored. Here we demonstrate that UCH L1 up-regulates β-catenin/TCF signaling: UCH L1 forms endogenous complexes with β-catenin, stabilizes it and up-regulates β-catenin/TCF-dependent transcription. We also show that, reciprocally, β-catenin/TCF signaling up-regulates expression of endogenous UCH L1 mRNA and protein. Moreover, using ChIP assay and direct mutagenesis we identify two TCF4-binding sites on the uch l1 promoter that are involved in this regulation. Since the expression and deubiquitinating activity of UCH L1 are required for its own basic promoter activity, we propose that UCH L1 up-regulates its expression by activation of the oncogenic β-catenin/TCF signaling in transformed cells

Drying of algae by various drying methods

[EN] Algae drying was carried out using Vacuum Tray Dryer and an Innovative Solar Conduction Dryer. Algae was dried in a Vacuum Tray Dryer at 60°C under varied pressure conditions and makes use of specially designed double condenser system. The open sun drying and solar conduction dryer (SCD) was also used for algae drying. Comparison between open sun drying and solar conduction dryer were done and it was found that the solar conduction dryer gives high performance than the open sun drying. It was also found that, the conductive heat transfer mode plays a crucial role in the solar conduction dryer.Bheda, B.; Shinde, M.; Ghadge, R.; Thorat, B. (2018). Drying of algae by various drying methods. En IDS 2018. 21st International Drying Symposium Proceedings. Editorial Universitat Politècnica de València. 1791-1797. https://doi.org/10.4995/IDS2018.2018.7761OCS1791179