다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Elements Of X Ray Diffraction

50 Years of Image Analysis

Objective Fewer than 3% of 4 million annual neonatal deaths occur in countries with reliable vital registration (VR) data. Global estimates for asphyxia-related neonatal deaths vary from 0.7 to 1.2 million. Estimates for intrapartum stillbirths are not available. We aimed to estimate the numbers of intrapartum-related neonatal deaths and intrapartum stillbirths in the year 2000. Methods Sources of data on neonatal death included: vital registration (VR) data on neonatal death from countries with full (> 90%) VR coverage (48 countries, n = 97 297); studies identified through literature searches (> 4000 abstracts) and meeting inclusion criteria (46 populations, 30 countries, n = 12 355). A regression model was fitted to cause-specific proportionate mortality data from VR and the literature. Predicted cause-specific proportions were applied to the number of neonatal deaths by country, and summed to a global total. Intrapartum stillbirths were estimated using median cause-specific mortality rate by country (73 populations, 52 countries, n = 46 779) or the subregional median in the absence of country data. Findings Intrapartum-related neonatal deaths were estimated at 0.904 million (uncertainty 0.65–1.17), equivalent to 23% of the global total of 4 million neonatal deaths. Country-level model predictions compared well with population-based data sets not included in the input data. An estimated 1.02 million intrapartum stillbirths (0.66–1.48 million) occur annually, comprising 26% of global stillbirths. Conclusion Intrapartum-related neonatal deaths account for almost 10% of deaths in children aged under 5 years. Intrapartum stillbirths are a huge and invisible problem, but are potentially preventable. Programmatic attention and improved information are required.

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No cry at birth: global estimates of intrapartum stillbirths and intrapartum-related neonatal deaths.

Adult Advanced Life Support: 2020 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations

Highly water dispersible boron based compounds are innovative and advanced materials which can be used in Boron Neutron Capture Therapy for cancer treatment (BNCT). Present study deals with the synthesis of highly water dispersible nanostructured Boron Nitride (BN). Unique and relatively low temperature synthesis route is the soul of present study. The morphological examinations (Scanning/transmission electron microscopy) of synthesized nanostructures showed that they are in transient phase from two dimensional hexagonal sheets to nanotubes. It is also supported by dual energy band gap of these materials calculated from UV- visible spectrum of the material. The theoretically calculated band gap also supports the same (calculated by virtual nano lab Software). X-ray diffraction (XRD) analysis shows that the synthesized material has deformed structure which is further supported by Raman spectroscopy. The structural aspect of high water disperse ability of BN is also studied. The ultra-high disperse ability which is a result of structural deformation make these nanostructures very useful in BNCT. Cytotoxicity studies on various cell lines (Hela(cervical cancer), human embryonic kidney (HEK-293) and human breast adenocarcinoma (MCF-7)) show that the synthesized nanostructures can be used for BNCT.

/pdf/nanostructured-boron-nitride-with-high-water-dispersibility-7my8mnlmfs.pdf

Nanostructured Boron Nitride With High Water Dispersibility For Boron Neutron Capture Therapy

Effect of solvent on crystallographic, morphological and optical properties of SnO2 nanoparticles

https://iopscience.iop.org/article/10.1088/1361-6641/aa5ee0/pdf

Linear and non-linear optical properties of Ag-doped Ge2Sb2Te5 thin films estimated by single transmission spectra

Electrical measurements have been carried out on a-(Ge 20 Se 80 ) 100− x Cu x ( x  = 0.0, 0.5, 1.0, 1.5 and 2.0 at.%) thin films. The dark conductivity ( σ d ) and photoconductivity ( σ ph ) measurements are done in the temperature range 252–349 K. The values of σ d , σ ph increase and dark activation energy (Δ E d ), photo activation energy (Δ E ph ) decrease as the concentration of Cu additive increases (up to 1.0 at.%). Photosensitivity ( σ ph / σ d ) increases and decay time constant ( τ d ) decreases as the concentration of Cu increases (up to 1.0 at.%). The charge carrier concentration ( n σ ) increases with Cu incorporation (up to 1.0 at.%). A reverse in the trend takes place in all these parameters as the Cu concentration is further increased (>1.0 at.%). These results are explained on the basis of change in the density of defect states present in the mobility gap of Ge–Se–Cu alloy.

Effect of Cu additive on the electrical properties of Ge-Se alloy

Electrical measurements are done on Se85−xTe15Inx (x = 0, 2, 4, 6 and 10 at%) thin films. The dark conductivity (σd) increases and the activation energy (ΔEd) decreases as the In concentration increases. The photoconductivity (σph) also increases with the increase in In concentration. The photosensitivity (σph/σd) decreases sharply after the In incorporation. The charge carrier concentration (nσ) is calculated with the help of dc conductivity measurements. The value of nσ increases as the In concentration increases. The results are explained on the basis of an increase in the density of localized states present in the mobility gap.

http://iopscience.iop.org/article/10.1088/0268-1242/20/1/017/pdf

Anup Thakur

Papers

Nanostructured Boron Nitride With High Water Dispersibility For Boron Neutron Capture Therapy

Effect of solvent on crystallographic, morphological and optical properties of SnO2 nanoparticles

Linear and non-linear optical properties of Ag-doped Ge2Sb2Te5 thin films estimated by single transmission spectra

Effect of Cu additive on the electrical properties of Ge-Se alloy

Effect of In additive on the electrical properties of Se–Te alloy