Spin-String Interaction in QCD Strings

I consider the question of the interaction between a QCD string and the spin of a quark or an antiquark on whose worldline the string terminates. The problem is analysed from the point of view of a string representation for the expectation value of a Wilson loop for a spin-half particle. A string representation of the super Wilson loop is obtained starting from an effective string representation of a Wilson Loop. The action obtained in this manner is invariant under a worldline supersymmetry and has a boundary term which contains the spin-string interaction. For rectangular loops the spin-string interaction vanishes and there is no spin-spin term in the resulting heavy quark potential. On the other hand if an allowance is made for the finite intrinsic thickness of the flux-tube, by assuming that the spin-string interaction takes place not just at the boundary of the string world-sheet but extends to a distance of the order of the intrinsic thickness of the flux tube, then we do obtain a spin-spin interaction which falls as the fifth power of the distance. Such a term was previously suggested by Kogut and Parisi in the context of a flux-tube model of confinement.Comment: 19 pages, 1 figure; Published version with added discussion and references in section

Free Response of Shells on Flexible Foundation

Free response of axisymmetric shells resting on flexible foundation in their asymmetric modes is studied using Finite Elements based on harmonic formulation. Influence of various parameters, such as subgrade modulus, proximity of boundary, density ratio, shear wave velocity, embedment of structure and depth of flexible foundation., on free response is studied. Axisymmetric interface element with harmonic functions is developed and introduced between the raft slab and foundation media

Theft and Mutilation of Library Resources in University Libraries of India: A Study

Purpose: This paper makes a broad investigation on the libraries of universities in Gujarat, India. The paper features the job of library experts in checking book robbery, mutilation, vandalism, and planning strategy to control and beat the issue in scholastic libraries. This examination additionally explores the security challenges in the libraries of universities. The investigation expects to distinguish the causes and defenselessness of book burglary, mutilation and vandalism and the weakness of library arrangements and safety efforts. Methodology: The examination depends on information got through the dispersion of survey in the colleges of Gujarat to know the present circumstance of library and the familiarity with library experts in regards to human/man-made security. It was an organized survey planned for gathering information from the library experts in Gujarat, India. The information investigation was done through MS Excel with visual diagrams for illustrations apprehensible. Findings: The percentage of weakness is less than 50% for unsecured windows, multiple entries/exits, and untrained library staff and unfamiliarity with proper security techniques. Most of the libraries have CCTV cameras, but very few libraries have RFID systems. More than 74% libraries take inventory regularly, fifty percentage data received that librarians’ workplace under lock and key system and 87% libraries operate by single door entry-exit. Originality: The result of this research contribute to all the academic university libraries regarding the security against theft, mutilation, vandalism. This study also aware the libraries regarding the upgraded and viable security through sufficient enrollment, preparing, library strategy and selection of innovation like CCTV and RFID. Research Limitation: This study has been carried out on only academic libraries of Gujarat state in India from the perspectives of human/manmade security. Practical implications: The important result in this study is that the enough text books is required to reduce the theft. Library have to change the rules of circulation and increase the loan period for books. Unawareness also observed from student side and at the time of examination they are suffer for the library books. Many libraries are not implemented grills on widow for security purpose. Library policy have to update as per the requirement and implementation is also necessary to control human security. The significant implication is RFID system not available in many libraries due to budget issue for that university management could develop the additional budget on security measures for libraries

PRITHVI MAHABHUTA DOMINANT CHARACTERS IN PUGAPHALA (ARECA CATECHU LINN.) SCIENTIFICALLY ASSESSED THROUGH PHARMACOGNOSY AND PHARMACEUTICAL CHEMISTRY

Objective: The Areca catechu L. is a tropical fruit, which is also called betel nut and is widely distributed in different parts of the world. Areca catechu L is used for various treatment aliments in the form of various preparations especially in powdered form and it used extensively in Ayurveda to treat Mukhavikara, Aruchi, Yonishaithilya, Shvetapradara etc. Areca nut is commonly used as betel nut or supari, as it is often chewed wrapped in betel leaves (Paan). The aim is to assessment of Mahabhautika dominance in Pugaphala by pharmacognostical and pharmaceutical study.Methods: Microscopic, macroscopic study and phsico-chemical analysis of Pugaphala Churna.Results: In present study Pugaphala was selected as a Parthiva dominant drug according to its Rasa Panchaka, after that its Mahabhautika dominancy was assessed by pharmacognostical and pharmaceutical study and results also support that in Pharmaceutical study loss on drying is 4.4%w/w, in Pharmacognostical study Rhomboidal crystal, Lignified scleroid etc. were found these characters also showed that Pugaphala is having dominancy of Prithvi Mahabhuta.Conclusion: Prithvi dominancy in Pugaphala is scientifically assessed by Pharmacognostical and Pharmaceutical study

Complete Agenesis of the Dorsal Pancreas: Case Report with Imaging Findings and Review of the Literature

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Turbulence Model Effects on RANS Simulations of the HIFiRE Flight 2 Ground Test Configurations

The Wind-US Reynolds-averaged Navier-Stokes solver was applied to the Hypersonic International Flight Research Experimentation (HIFiRE) Flight 2 scramjet ground test configuration. Two test points corresponding to flight Mach numbers of 5.9 and 8.9 were examined. The emphasis was examining turbulence model effects on the prediction of flow path pressures. Three variants of the Menter k-omega turbulence model family were investigated. These include the baseline (BSL) and shear stress transport (SST) as well as a modified SST model where the shear stress limiter was altered. Variations in the turbulent Schmidt number were also considered. Choice of turbulence model had a substantial effect on prediction of the flow path pressures. The BSL model produced the highest pressures and the SST model produced the lowest pressures. As expected, the settings for the turbulent Schmidt number also had significant effects on predicted pressures. Small values for the turbulent Schmidt number enabled more rapid mass transfer, faster combustion, and in turn higher flowpath pressures. Optimal settings for turbulence model and turbulent Schmidt number were found to be rather case dependent, as has been concluded in other scramjet investigations

Phyllanthus Niruri: A magic Herb

Medicinal herbs are significant source of pharmaceutical drugs. Latest trends have shown increasing demand of phytodrugs and some medicinal herbs have proven hepatotprotective potential. Inflammation describes a coordinated series of molecular, cellular, tissue, organ, and systemic responses that drive the pathology of various diseases Inflammation is a finely tuned, dynamic, highly-regulated process that is not inherently detrimental, but rather required for immune surveillance, optimal post-injury tissue repair, and regeneration. The inflammatory response is driven by cytokines and chemokines and is partially propagated by damaged tissue-derived products (Damage-associated Molecular Patterns; DAMP’s). DAMPs perpetuate inflammation through the release of proinflammatory cytokines, but may also inhibit anti-inflammatory cytokines

A retrospective analysis of ectopic pregnancies in tertiary care hospital of Western India: two year study

Background: Ectopic pregnancy (EP) is the leading cause of maternal morbidity and mortality in the first trimester and major cause of reduced reproductive potential. Early detection of EP by improved ultrasonography modalities has decreased the rate of rupture and consequent maternal morbidity. Aim was to study the predisposing risk factors in modern scenario and choose the appropriate management available.Methods: A retrospective study on clinical diagnosis and management of EP of patients was carried out between January 2018 to February 2020. Investigations included CBC, UPT, serum β-hCG and TVS. Management was decided after thorough evaluation.Results: Out of 7,780 deliveries, 70 were EP (0.9%). Women with age 21-30 year had highest incidence (85.7%). Common symptoms were abdominal pain (94%), amenorrhea (87%), bleeding per vagina (48%). Most common risk factor associated with EP was PID (28.5%). Tubal EP was most common (84.2%) involving ampulla (66%), isthmus (15%), fimbria (12%), interstitial (7%). Scar ectopic was reported in 10% of cases and ovarian, rudimentary horn and abdominal pregnancy in 1.4% each. About 52.8% of ectopic was ruptured and salpingectomy was done in 74.3% and salpingo-oophorectomy in 2.8%. Five cases of scar EP required hysterotomy and 1 case was managed by methotrexate (MTX).Conclusions: EP remains a major challenge to the obstetrician worldwide. A high index of suspicion is required for early diagnosis and timely intervention in the form of medical or surgical treatment will definitely help in reducing the morbidity and mortality

Multicentricity of breast cancer: whole-organ analysis and clinical implications

We studied the spatial relationship within the breast between multicentric foci (MCF) and the primary tumour in 30 modified radical mastectomy specimens using Egan's correlated pathological-radiological method using 5 mm slices of the whole breast. The relative positions within the breast of the primary tumour and MCF were used to calculate the relative distribution of primary tumour and MCF in the four quadrants of the breast and the per cent breast volume that would be required to be excised to include all MCF. Nineteen (63%) breast harboured MCF. The relative distribution of primary tumour and MCF in the four breast quadrants was significantly different (P = 0.034). MCF were present beyond the index quadrant (25% of breast volume including the tumour) in as many as 79% (15/19) of breasts that harboured MCF; and in half the cases (15/30) when all breast were considered. This is in variance with the suggestion put forward previously that MCF are contained within the index quadrant in 90% of cases. Although the number of patients in the present series is small, the probability of our finding being due to play of chance is 1 in 1500. In a large series of breast conservation studies > 90% of early breast recurrences have been found to occur in the index quadrant. Our finding, that in half the patients (15/30) MCF are present in quadrants other than the index quadrant, suggests that MCF do not give rise to early breast recurrence