Changes in Electrocardiogram Among Temporary Residents at High Altitude

A prospective study was conducted on young healthy men who were residents of plains and stayed at high altitude for 24 months-the first 12 months at an altitude of 4,200 metres and subsequent 12 months at 3,600 metres.Their ECGs were recorded in the plains before departure for high altitude and after 3, 6, 11, 18 and 23 months of stay at high altitude. After their return tothe plains further ECG examinations were carried out after 1, 3 and 6 months of return. ECG changes suggestive of right ventricular hypertrophy were present in a substantial number of individuals after three months of arrival and they persisted during their stay at high altitude. The ECG changes reversed completely in majority of individuals within one month of return to plains. These changes are considered to be due to hypoxia and are reversible

Are Radio Pulsars Strange Stars ?

A remarkably precise observational relation for pulse core component widths of radio pulsars is used to derive stringent limits on pulsar radii, strongly indicating that pulsars are strange stars rather than neutron stars. This is achieved by inclusion of general relativistic effects due to the pulsar mass on the size of the emission region needed to explain the observed pulse widths, which constrain the pulsar masses to be less than 2.5 Solar masses and radii to be smaller than 10.5 km.Comment: v.2 : 12 pages including 3 figures and 2 tables, LaTex, uses epsfig. This version has one extra figure, few lines of new text and typos fixe

Case History of a Partially Underground Power House

In the normal rock conditions, conventional type surface power houses have been built, whereas in structurally sound rock with sufficient rock cover, underground power houses have been attempted in India. The geological uncertainties plays major role in deciding the type of power house at a particular site. While in the surface type conventional power house huge excavation and concreting are involved, the access to the power house involves major work in the case of underground power house. There are very little examples when semi underground type of power houses have been attempted in India. The Mahi power house-II of Rajasthan is the sole attempt of shaft type of power house after the successful completion of small Giri power house in Himachal Pradesh. This paper presents the case study of this shaft type semi underground power house. Important features about its layout, design and construction have been discussed here

Construction of Hydel Power House in Weak Rocks

Geological uncertainties have always played an important role in planning of a hydel power house. This paper presents case study of a power house which was subjected to major revisions in its planning due to inherent instabilities in rock slopes. Initially the power house was planned with service bay and other facilities on its left hand side, but the weak and instable slopes and sliding of large rock masses necessitated its thorough revision by bringing service bay and other facilities to its right hand side along with addition of many new features and flattening of slopes. There were many alternatives under consideration and final selection was based on techno-economic balance of the project

Comparative Study of Ground Water Quality of Udaipur and its Surrounding Areas

Ground water is considered one of the country's most important natural resources. It's responsible for approximately 40% of the water utilized for all other purposes except for the generation of hydropower and the cooling of electric power plants. Interestingly, it's resources that are commonly utilized and have a significant impact on the country's health and economy. Ground water is the natural gift to humanity, it is valued at around 210 billion m3 and includes the volume of recharge as well as the volume of water that evaporates and falls to the earth. One third of the water is used for irrigation, the remaining two-thirds are domesticated and industrially utilized. The majority of the water is re-circulated into rivers. Today, the rapid rate of development, increased industrialization, and population density have all contributed to an increased burden on water resources. The process of groundwater pollution is different from the pollution of surface water; the resource is imperceptible and recovery is difficult at the current state of technology (MacDonald and Kavanaugh 1994). As part of the international effort to understand the functions, structures, and processes within the CZ, a variety of investigations have been conducted that contribute to our understanding of the flow and evolution of groundwater (Sawyer et al. 2016; Goldhaber et al. 2014). Water pollutants in groundwater are typically odorless and colorless. Additionally, the adverse effects of polluted groundwater on human health are long-term and are extremely difficult to recognize (Chakraborti et al. 2015). Around one third of the world's population is  dependent on groundwater for drinking water ( International The association of hydrogeologists is dedicated to promoting the study of water-related issues. Groundwater is water that is particularly significant in arid and semiarid regions. where precipitation and surface water are confined (Li et al.2017a)

Kinetics of Hexacyanoferrate(III) Oxidation of 4-tert-Butylthiophenol & 2-Merhyl-a-tert-butylrhiophenol

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Evaluation of Certain Insecticides and Repellents Against Ticks

The susceptibility of two commonly occurring species of Ixodid ticks viz., the cattle tick, Hyalomma anatolicum anatolicum Koch and the brown dog tick, Rhipicephalus sanguineus Latr to certain newer insecticdes was investigated under controlled environmental conditions. The repellency of diethyl toluamide (Deet) to the two species of ticks was also investigated by a specially devised laboratory technique. It was found that based on LC/sub 50/ values, the two species were most susceptible to pyrethrins followed by carbaryl whereas malathion was found least toxic to the ticks

Bound State Wave Functions through the Quantum Hamilton - Jacobi Formalism

The bound state wave functions for a wide class of exactly solvable potentials are found utilizing the quantum Hamilton-Jacobi formalism. It is shown that, exploiting the singularity structure of the quantum momentum function, until now used only for obtaining the bound state energies, one can straightforwardly find both the eigenvalues and the corresponding eigenfunctions. After demonstrating the working of this approach through a number of solvable examples, we consider Hamiltonians, which exhibit broken and unbroken phases of supersymmetry. The natural emergence of the eigenspectra and the wave functions, in both the unbroken and the algebraically non-trivial broken phase, demonstrates the utility of this formalism.Comment: replaced with the journal versio

Diagnosis of abnormal biliary copper excretion by positron emission tomography with targeting of (64)Copper-asialofetuin complex in LEC rat model of Wilson\u27s disease

Identification by molecular imaging of key processes in handling of transition state metals, such as copper (Cu), will be of considerable clinical value. For instance, the ability to diagnose Wilson\u27s disease with molecular imaging by identifying copper excretion in an ATP7B-dependent manner will be very significant. To develop highly effective diagnostic approaches, we hypothesized that targeting of radiocopper via the asialoglycoprotein receptor will be appropriate for positron emission tomography, and examined this approach in a rat model of Wilson\u27s disease. After complexing (64)Cu to asialofetuin we studied handling of this complex compared with (64)Cu in healthy LEA rats and diseased homozygous LEC rats lacking ATP7B and exhibiting hepatic copper toxicosis. We analyzed radiotracer clearance from blood, organ uptake, and biliary excretion, including sixty minute dynamic positron emission tomography recordings. In LEA rats, (64)Cu-asialofetuin was better cleared from blood followed by liver uptake and greater biliary excretion than (64)Cu. In LEC rats, (64)Cu-asialofetuin activity cleared even more rapidly from blood followed by greater uptake in liver, but neither (64)Cu-asialofetuin nor (64)Cu appeared in bile. Image analysis demonstrated rapid visualization of liver after (64)Cu-asialofetuin administration followed by decreased liver activity in LEA rats while liver activity progressively increased in LEC rats. Image analysis resolved this difference in hepatic activity within one hour. We concluded that (64)Cu-asialofetuin complex was successfully targeted to the liver and radiocopper was then excreted into bile in an ATP7B-dependent manner. Therefore, hepatic targeting of radiocopper will be appropriate for improving molecular diagnosis and for developing drug/cell/gene therapies in Wilson\u27s disease