Entanglement enhancement and postselection for two atoms interacting with thermal light

The evolution of entanglement for two identical two-level atoms coupled to a resonant thermal field is studied for two different families of input states. Entanglement enhancement is predicted for a well defined region of the parameter space of one of these families. The most intriguing result is the possibility of probabilistic production of maximally entangled atomic states even if the input atomic state is factorized and the corresponding output state is separable.Comment: accepted for publication in J. Phys.

Prevalence of peripheral artery disease in diabetes mellitus: research article

Background: Peripheral artery disease is a major macrovascular complication of diabetes mellitus. Patients with diabetes mellitus have an increased prevalence of PAD. The ankle brachial pressure index is an easy, non invasive and often under utilised tool for diagnosis of PAD.Methods: In the present study, 100 patients from Western Uttar Pradesh with diabetes mellitus were enrolled to find out prevalence of peripheral vascular disease using ankle brachial pressure index and study the associated risk factors.Results: 59 percent of the subjects were female and 41 percent were male. Ankle-brachial index (ABI) examination of patients indicated Abnormal (ABI= <0.9), in 40 cases.Conclusions: it can be concluded that peripheral vascular disease in Diabetes Mellitus is more commonly associated than is generally believed

To study the association of high sensitivity C-reactive protein with metabolic syndrome

Background: Metabolic Syndrome is a constellation of dyslipidemia (elevated triglycerides, low high-density lipoproteins (HDL)), elevation of arterial blood pressure (BP), dysregulated glucose homeostasis, and increased abdominal obesity.Methods: We studied the association of high sensitivity C-reactive protein with metabolic syndrome by case-control method in our tertiary care hospital in West U.P.Results: The mean age of cases and controls was 52.6 ± 7.7 and 51.4±7.0 years, respectively. There were 25 (50%) male and 25 (50%) female in case groups, and 27 (54%) males and 23 (46%) females in control group. Our analysis revelaed that there was a significant association between hs-CRP and the central obesity when compared in case-control group (3.57 vs 0.96 mg/L) (p value <0.001). There was no significant association between hs-CRP and high triglycerides, hypertension, diabetes, and reduced high density lipoprotein cholesterol.Conclusions: Raised hsCRP level can be considered as a surrogate marker of chronic inflammation in patients with metabolic syndrome

Topology and Phases in Fermionic Systems

There can exist topological obstructions to continuously deforming a gapped Hamiltonian for free fermions into a trivial form without closing the gap. These topological obstructions are closely related to obstructions to the existence of exponentially localized Wannier functions. We show that by taking two copies of a gapped, free fermionic system with complex conjugate Hamiltonians, it is always possible to overcome these obstructions. This allows us to write the ground state in matrix product form using Grassman-valued bond variables, and show insensitivity of the ground state density matrix to boundary conditions.Comment: 4 pages, see also arxiv:0710.329

Variability of rainfall and soil water in the dry tropics: A case study for selected locations of India, Niger and Botswana

The objectives of the study were to examine the variability of rainfall and soil moisture availability of three diverse locations in dry tropica, i.e. Hyderabad in India..

A systems analysis approach to developing cropping systems in the semi-arid tropics

The semi-arid tropics (SAT) are characterized by a high climatic water demand. The mean annual temperature is greater than 18-c and rainfall exceeds evapotranspiration for only 2 to 4 1/2 months in the dry and 4 1/2 to 7 months in wet/dry SAT..

Agroclimatic Environment of Chickpea and Pegeonpea

Meteorological data for four contrasting chickpea-growing locations--Hisar and Hyderabad in India, Aleppo in Syria, and Khartoum in Sudan are given. In India, pigeonpea-growing areas are usually located in regions with a 600-1400 mm annual rainfall and a growing period of 90-180 days. Chickpea is usually grown where mean daily maximum temperatures are 22.5-30 degrees C and mean daily minimum temperatures 7.5-13 degrees C during January, when flowering begins. The soils on which the two crops are grown are predominantly Alfisols, Entisols, Inceptisols, and Vertisols. At Patancheru, in a medium-deep Vertisol having 150 mm water-storage capacity, the simulated available soil water in 70% of the years studied was 120 mm under rainy-season fallow and 80 mm under rainy-season sorghum. At Hisar, the simulated available soil water after rainy season fallow in 70% of the years was more than 120 mm in soils with 150 mm water-storage capacity. Using the water use and yield relationship, cumulative probabilities of chickpea yields and phosphorus requirements were computed for both ICRISAT Center and Hisar. Although simulated yields were higher than farmers' yields, the water use and yield relationships can be used to compute the probabilities of potential yield at various locations. The delineation of the isoclimes of pigeonpea-growing areas in West Africa is also reported

Tripartite entanglement and quantum relative entropy

We establish relations between tripartite pure state entanglement and additivity properties of the bipartite relative entropy of entanglement. Our results pertain to the asymptotic limit of local manipulations on a large number of copies of the state. We show that additivity of the relative entropy would imply that there are at least two inequivalent types of asymptotic tripartite entanglement. The methods used include the application of some useful lemmas that enable us to analytically calculate the relative entropy for some classes of bipartite states.Comment: 7 pages, revtex, no figures. v2: discussion about recent results, 2 refs. added. Published versio

Farming Systems Research in India: A Historical Perspective

This review gives a historical perspective of the development of Farming Systems Research (FSR) in India over the past 60 years, as India changed from a traditional, subsistence oriented agriculture to one based on science and technology. The first period relates to the years 1930–50, when the Government of India created the Indian Council of Agricultural Research (ICAR) and initiated research on dryland agriculture The second period relates to the development of coordinated agronomic trials and simple fertilizer experiments on farmers' fields during the years 1950–65. This development was a forerunner of networks of coordinated applied agronomic research relevant to farmers' cropping systems and adaptive research with farmers' participation. The development of a soil conservation research network in the same period strengthened research on the natural resource base countrywide. The third period started with the reorganization of ICAR, the establishment of State Agricultural Universities and the introduction of coordinated research programmes on high-yielding varieties (HYVs). At the same time the coordinated dryland agricultural research programmes, and subsequently the Central Research Institute for Dryland Agriculture (CRIDA), were established, leading to the development of a national system of FSR for rainfed agriculture The fourth period of FSR started with the establishment in 1972 of ICRISAT, an international agricultural research centre that accepted FSR as its mandate and developed the concept of integrating the management technologies for various components of climate, soil, water and crops with a farmers' perspective. ICRISAT's work was complementary to that of CRIDA and helped to bring about conceptual changes in Indian FSR through research aimed at understanding principles and processes of semi-arid tropical (SAT) farming systems. Following this, mechanisms for strengthening on-farm research were emphasized so as to provide stronger linkages between researchers, extension workers and farmers Today, FSR with a farmers' perspective occupies pride of place in India's agricultural research agenda. Yet it is a long way from bridging the gap between the generation of technology and its adoption by farmers, who have shown a preference for its components rather than for the full package of technolog

Operator monotones, the reduction criterion and the relative entropy

We introduce the theory of operator monotone functions and employ it to derive a new inequality relating the quantum relative entropy and the quantum conditional entropy. We present applications of this new inequality and in particular we prove a new lower bound on the relative entropy of entanglement and other properties of entanglement measures.Comment: Final version accepted for publication, added references in reference [1] and [13