Investigating Electronic, Optical, and Phononic Properties of Bulk γ-M<inf>2</inf>ON<inf>2</inf>and β-M<inf>7</inf>O<inf>8</inf>N<inf>4</inf>(M = Hf and Zr) Insulators Using Density Functional Theory

Hafnium and zirconium oxynitrides have similar properties, yet a consolidated investigation of their intrinsic properties has not been carried out. In this paper, we perform first-principles density functional theory calculations of γ- and β-phase hafnium and zirconium oxynitrides, which show that the γ-M2ON2(M = Hf and Zr) is an indirect band-gap (Eg) insulator, while the β-M7O8N4has a "pseudo-direct" type of Eg. β-phase has higher Egthan γ-phase, with concomitant disappearance of the conduction band tail. Optical properties in γ-M2ON2show that the anisotropy is negligible, and the optical constant values are in the range of other superhard materials. Phonon calculations present peculiar characteristics such as a small phonon band gap in γ-Hf2ON2and imaginary phonon frequencies in β-phases relating to lattice instability. The phononic properties are unfavorable for their potential use as an absorber material of the hot carrier solar cell-an emerging photovoltaic concept

Rapid gains in yield and adoption of new maize varieties for complex hillside environments through farmer participation. II. Scaling-up the adoption through community-based seed production (CBSP)

Participatory varietal selection (PVS) led to the identification of Population-22 and its later release as Manakamana-3. Subsequently further mother–baby trials tested five unreleased open-pollinated varieties (OPVs), ZM-621, Shitala, Population-45, Hill Pool White, and Hill Pool Yellow to compare them with Manakamana-3. Farmers again preferred Manakamana-3 as well as ZM-621 for their stable, higher grain yield, and for other traits such as stay-green, non-lodging, large white grains, and tolerance to foliar diseases. However, Manakamana- 3 and ZM-621 both had late maturity, open husks and dented grain. Both were tested with farmers on-farm coordinated farmers field trials (CFFTs) and had not been identified as this was more contractual type of participatory research. Individual traits were measured but overall farmers’ preferences were not elicited. In the more collaborative participation of the mother– baby trials the overall preference was determined and farmers traded-off the late maturity and dented grains of Manakamana-3 and ZM-621 against other favorable traits. Depending on location, these genotypes yielded 15–45% more grain than the local varieties in the mother–baby trials. These results led to the release of ZM-621 as Deuti in 2006. Farmers had adopted Manakamana-3 (released in 2002) and ZM-621 (Deuti) as a direct result of PVS trials and increased area under them year after year. Farmers awareness of the varieties has increased and seeds of these varieties are under community-based seed production (CBSP). Involving farmers through a collaborative mode of participation in varietal selection overcame bottlenecks to finding new varieties that had occurred with more contractual on-farm research

Value chain analysis of non-timber forest products in Baglung district, Nepal

This study was carried out in five Village Development Committees of Baglung district, Nepal. The main objective was to assess the constraints and opportunities to run the non-timber forest products based enterprises, and to design business solutions to make their value chains more efficient and competitive with the best utilization of the available resources. Primary data were collected through group discussions, key informants interview, informal meetings and direct observations, using open-ended questionnaires and checklists. Similarly, secondary data were gathered from reports and records of community forest user groups, District Forest Office and other organizations. The data were analyzed using qualitative and quantitative tools. The identified major constraints concerning the selected value chains are: absence of detailed resource inventory; inadequate knowledge and skills with local people about modern technology and product quality parameters, local resource management policy and sustainable resource harvesting; insufficient finance with local processors; lack of sufficient information about market; and poor infrastructure development. In addition, the study also identified a number of opportunities such as the resource potential and monetary benefits to the local people; financial access through community forest user groups&apos; fund and financial institutions; growing market demand for quality products; involvement of service providers in forest resource management; and supportive policy for employment generation from locally available natural resources. This paper has suggested some business solutions for the effective value chain of selected products

Noninvasive genetic population survey of snow leopards (Panthera uncia) in Kangchenjunga conservation area, Shey Phoksundo National Park and surrounding buffer zones of Nepal

<p>Abstract</p> <p>Background</p> <p>The endangered snow leopard is found throughout major mountain ranges of Central Asia, including the remote Himalayas. However, because of their elusive behavior, sparse distribution, and poor access to their habitat, there is a lack of reliable information on their population status and demography, particularly in Nepal. Therefore, we utilized noninvasive genetic techniques to conduct a preliminary snow leopard survey in two protected areas of Nepal.</p> <p>Results</p> <p>A total of 71 putative snow leopard scats were collected and analyzed from two different areas; Shey Phoksundo National Park (SPNP) in the west and Kangchanjunga Conservation Area (KCA) in the east. Nineteen (27%) scats were genetically identified as snow leopards, and 10 (53%) of these were successfully genotyped at 6 microsatellite loci. Two samples showed identical genotype profiles indicating a total of 9 individual snow leopards. Four individual snow leopards were identified in SPNP (1 male and 3 females) and five (2 males and 3 females) in KCA.</p> <p>Conclusions</p> <p>We were able to confirm the occurrence of snow leopards in both study areas and determine the minimum number present. This information can be used to design more in-depth population surveys that will enable estimation of snow leopard population abundance at these sites.</p

A Study of Meticillin Resistant Pattern on Clinical Isolates of Staphylococcus aureus in Tertiary Care Hospitals of Pokhara

ABSTRACT Meticillin-resistant Staphylococcus aureus (MRSA) has become one of the well-known etiologic agents for a wide variety of infections in both hospital and community settings. It is also a growing threat to the immunocompromised as well as to the general public. A total of 98 S. aureus isolates from 450 different human clinical specimens comprising pus, nasal swab, blood, urine and sputum were obtained at two tertiary care hospitals of Pokhara; Manipal Teaching Hospital (MTH) and Western Regional Hospital (WRH). Those isolates were then screened for meticillin resistance by the Kirby Bauer disc diffusion technique following aseptic procedures in Microbiology laboratory, WRH. Antibiotic susceptibility pattern of Meticillin sensitive S. aureus (MSSA) and Meticillin resistant S. aureus (MRSA) were studied by using antibiotic discs like cefoxitin (30mcg), oxacillin (1mcg), vancomycin (30mcg) and gentamicin (10mcg). 72.4% of the isolates were found to be MRSA while 27.6% were MSSA. Among them, very high resistance levels (87.8%) and (74.5%) were detected against oxacillin and cefoxitin while gentamicin and vancomycin recorded the least resistance levels i.e (25.5%) and (5.1%) respectively. High percentage of meticillin resistant isolates and occurence of vancomycin resistance among them which may refer to irrational use of antimicrobial agent, thus, necessitate implementation of good strategies for control of infection and use of antibiotics. Outcome of this study emphasizes the need for constant monitoring on the prevalence of MRSA and to help clinicians/doctors in the effective management and treatment of infections caused by S.aureus

A prospective study of complications from comprehensive abortion care services in Nepal

<p>Abstract</p> <p>Background</p> <p>In March 2002, Nepal's Parliament approved legislation to permit abortion on request up to 12 weeks of pregnancy. Between 2004 and 2007, 176 comprehensive abortion care (CAC) service sites were established in Nepal, leading to a rise in safe, legal abortions. Though monitoring systems have been developed, reporting of complications has not always been complete or accurate. The purpose of this study was to report the frequency and type of abortion complications arising from CAC procedures in different types of facilities in Nepal.</p> <p>Methods</p> <p>A total of 7,386 CAC clients from a sample of facilities across Nepal were enrolled over a three-month period in 2008. Data collection included an initial health questionnaire at the time of abortion care and a follow-up questionnaire assessing complications, administered two weeks after the abortion procedure. A total of 7,007 women (95%) were successfully followed up. Complication rates were assessed overall and by facility type. Multivariable logistic regression was used to assess the association between experiencing a complication and client demographic and facility characteristics.</p> <p>Results</p> <p>Among the 7,007 clients who were successfully followed, only 1.87% (n = 131) experienced signs and symptoms of complications at the two-week follow up, the most common being retained products of conception (1.37%), suspected sepsis (0.39%), offensive discharge (0.51%) and moderate bleeding (0.26%). Women receiving care at non-governmental organization (NGO) facilities were less likely to experience complications than women at government facilities, adjusting for individual and facility characteristics (AOR = 0.18; 95% CI: 0.08-0.40). Compared to women receiving CAC at 4-5 weeks gestation, women at 10-12 weeks gestation were more likely to experience complications, adjusting for individual and facility characteristics (AOR = 4.21; 95% CI: 1.38-12.82).</p> <p>Conclusions</p> <p>The abortion complication rate in Nepali CAC facilities is low and similar to other settings; however, significant differences in complication rates were observed by facility type and gestational age. Interventions such as supportive supervision to improve providers' uterine evacuation skills and investment in equipment for infection control may lower complication rates in government facilities. In addition, there should be increased focus on early pregnancy detection and access to CAC services early in pregnancy in order to prevent complications.</p