Facile synthesis and photoluminescence spectroscopy of 3D-triangular GaN nano prism islands

We report a strategy for fabrication of 3D triangular GaN nano prism islands (TGNPI) grown on Ga/Si(553) substrate at tow temperature by N-2(+) ions implantation using a sputtering gun technique. The annealing of Ga/Si(553) (600 degrees C) followed by nitridation (2 key) shows the formation of high quality GaN TGNPI cross-section. TGNPI morphology has been confirmed by atomic force microscopy. Furthermore, these nano prism islands exhibit prominent ultra-violet luminescence peaking at 366 nm upon 325 nm excitation wavelength along with a low intensity yellow luminescence broad peak at 545 nm which characterizes low defects density TGNPI. Furthermore, the time-resolved spectroscopy of luminescent TGNPI in nanoseconds holds promise for its futuristic application in next generation UV-based sensors as well as many portable optoelectronic devices

Implementation of High Efficiency, High Lifetime and Low Cost Converter for an Automatic Photovoltaic Water Pumping Station

A novel idea of photovoltaic (PV) energy based converter for water pumping system without the USAge of fuel cells or batteries. In proposed system, the design of a three phase induction motor drive is directly supplied by using photovoltaic system energy. Presence of a three phase induction motor has better performance with optimized efficiency compared to the commercial water pumping system of DC motor. The developed resonant of Two Inductor Boost Converter (TIBC) and voltage quadruple with three phase Voltage Source Inverter (VSI) are based on the current fed multi resonant converter. Low input current ripple and high voltage gain are the features of TIBC. So the classical topology used to improve the system with a constant duty cycle control and a non dissipative snubber circuit along with a hysteresis controller to improve its efficiency. Due to the non existence of electrolytic capacitors the system is required to have a high lifetime and total system cost is low. As a result, in isolated locations the system has an optimistic solution and it provide water to poor societies

Osteopetrosis in two siblings: two case reports

BACKGROUND: Osteopetrosis is a rare inherited metabolic bone disorder characterized by extensive sclerosis of skeletons, visual and hearing impairment, hepatosplenomegaly and anemia. It has two major clinical forms: the autosomal dominant adult (benign) form is associated with milder symptoms often appearing in later childhood and adulthood whereas the autosomal recessive infantile (malignant) form has severe presentations appearing in very early childhood, if untreated, is typically fatal during infancy or early childhood. A rare autosomal recessive (intermediate) form is present during childhood with some signs and symptoms of malignant osteopetrosis. Diagnosis is mainly based on clinical and typical generalized increase in bone density. CASE PRESENTATION: The two siblings of Indo-Aryan ethnicity, aged five and 8 years, were admitted with irregular low grade fever and gradually increasing abdominal mass for last 3 years. They also had history of hearing loss. On examination, the patients were found pale with poor nutritional status, short stature, frontal bossing and splenomegaly. We made a clinical diagnosis of hemolytic anemia and investigated accordingly. Peripheral Blood Smear was suggestive of leucoerythroblastic picture in both the siblings. We extended our investigations and radiological survey revealed generalized increase in bone density which was consistent with osteopetrosis. CONCLUSION: Osteopetrosis is a rare disease transmitted by autosomal dominant or recessive inheritance having variable penetrance. We report here milder form of disease in the two siblings having typical clinical features in the form of anemia, hepatosplenomegaly and hearing loss. Diagnosis was confirmed by typical generalized increase in bone density in both the patients

Simulation of vertical people transportation systems

This thesis was focused on generating synthetic data of several parameter configurations from elevator system simulations model that could be utilized in prescriptive maintenance policies. An existing simulation model of the elevator system was used as a foundation for the elevator system model. To represent the characteristics of the studied elevator and to make the model more parametric, new elements were included and multiple modifications were made to the based model. For system simulation of the elevator system, SimulationX software was used. The simulation model was validated using the measurement data from the real elevator. The maximum peak to peak value at the nominal speed of lateral and vertical vibrations were the main criteria for the model validation. In the validation comparisons, there was a good correlation between measurement data and simulation data. A brief investigation of model behavior was made while replacing one of the components with another component for same functionality in the model. All together 72 combinations of nominal run parameter configuration were simulated by four different elevator specifications. Sensitive analysis showed that in the majority of cases, the simulation model exhibited its sensitivity and robustness in projecting the dynamic behavior of elevator systems. However, in few cases the deviation of the results from expectation. The fundamental causes for this deviation were investigated and corrective action was suggested to avoid this deviation. Finally, three load case scenarios were modeled and evaluated to showcase the capabilities for other malfunction modeling and more effectively creating synthetic data using dynamic simulation

Role of isoxsuprine as a tocolytic agent in the management of preterm labor in Indian clinical practice

Preterm labor (PTL) is one of the prime etiological factors responsible for neonatal disease burden and fatality. Despite recent advances in neonatal care and obstetrics, the occurrence of PTL is increasing, and women who have previously experienced spontaneous PTL are more susceptible to PTL in the future. Currently, PTL is diagnosed based on regular uterine contractions, their frequency, and associated cervical changes. Antenatal corticosteroids and magnesium sulfate interventions can improve neonatal outcomes. Tocolytic medications can temporarily delay delivery to facilitate the administration of corticosteroids. Isoxsuprine is a preferred tocolytic agent because it significantly increases the average latency period, delays delivery by >48 hours, and is associated with improved perinatal outcomes. This review examines recommendations from expert gynecologists for the management of PTL in the Indian clinical setting. The experts opined that intravenous administration with Isoxsuprine provides the advantage of dose titration, thereby minimizing potential side effects. Moreover, continuation of oral isoxsuprine till 37 weeks as maintenance therapy was advised as per literature evidence and experts’ clinical experience. Furthermore, concomitant administration of nifedipine and magnesium sulfate was not recommended as this can lead to neuromuscular blockade and fatal respiratory arrest, due to the action of both molecules on the blockage of calcium channels. The experts also emphasized the significance of considering individual experiences with various treatment options and identified specific obstacles and difficulties related to the utilization of isoxsuprine as a tocolytic agent, thereby offering valuable insights into potential approaches to overcome these challenges

Application of Ala‚k¹ra Siddh¹nta in ‘Ode To A Skylark’ of Shelley

Aesthetics “A Science of Fine Arts” is an outcome of the self-realisation, which Indian aestheticians, has attained by their tap and devotion (s¹dhya) through their age old experiments by the way of their sensuous power. There is well experimented siddh¹ntas (theories) or processes of judgement with sensuous taste in relishing aesthetic beauty, that Indian aestheticians assure. These siddh¹ntas (theories) can be relished, enjoyed and can be expressed in words. The multifarious process of appropriating words and sentences like syntax, diction, style matures as a result of their cumulative refinement for centuries, till it is appreciated as full fledge doctrine (siddh¹nta) of Indian poetics. These siddh¹ntas (theories) are: rasasiddh¹nta of ¸c¹ryaBharat (theory of aesthetic pleasure), alaṁkāra siddhānta of ¸c¹ryaBh¹mah (theory of figures of speech), dhvani siddhānta of ¸c¹rya ¸nandavardhana (theory of suggestion), rīti siddhānta of ¸c¹ryaV¹man (theory of style), vakrokti siddhānta of ¸c¹ryaKuntaka (theory of obliquity), and aucitya siddh¹nta of ¸c¹rya K¬emendra (theory of  propriety). The essence of the Vedic and the Non-Vedic religious, sectarian concepts, philosophical thoughts and doctrine (siddh¹nta) of different schools has considerably enriched and sweetened Indian philosophy; and its scope is so great and the span is so vast, that we find no such line of literary study that is not perfumed with its essence

Bacterial vaginosis and the role of prebiotics and probiotics: current practices

Bacterial vaginosis (BV) is characterized by overgrowth of opportunistic bacteria and a decrease in the levels of Lactobacilli. BV is commonly encountered by gynaecologists practicing in India. The opinions of 21 gynaecologists across India regarding diagnosis and management of BV were sought via focussed group discussions. In Indian women, BV is more common in the reproductive age group, perimenopausal women, women with polycystic ovarian disease (PCOD), pregnant women, and in teenagers/pubertal age group. BV is often underestimated as it is not diagnosed by family physicians. The panel of experts opined that they preferred to conduct screening for BV in all high-risk pregnant cases, women with bad obstetric history such as premature abortions and women with a history of tuberculosis. One challenge faced by clinicians in the real-world setting is recurrent infections of BV in their patients. For the treatment of BV, antibiotics can be prescribed along with pre-probiotics to avoid dysbiosis and to prevent recurrence of BV. Pre-probiotics should be administered in sufficient amounts for adequate management of BV. More than 80% of Lactobacilli species should be present in an ideal pre-probiotic to ensure adequate production of acid and bacteriocins for the destruction of unhealthy bacteria and prevention of microfilm formation. The results with the pre-probiotics used will depend on the quality of the formulation and the maintenance of the cold chain. Prebiotic -probiotic supplementation may be considered a new adjuvant treatment for BV

An Unusual Association of Aplasia Cutis Congenita with Twin Pregnancy and Maternal Varicella Case Report

We report an unusual case of aplasia cutis congenita associated with twin pregnancy and maternal varicella in first trimester, occurring over the extremity of one of the twin while other twin was perfectly normal