The Raman Spectrum of Gypsum

In an investigation of the Raman spectra of some ionized substances in aqueous solution, it was found [1] that the frequency shift given by a solution of potassium carbonate was in fairly close agreement with the strongest shift given by calcite. Data for such a comparison in other cases do not appear to exist, for change of frequency on scattering has been measured for only a few crystalline substances. In addition to calcite [2,3,5], these are quartz [2,3,4,5], ice [5], and topaz [6]. No modified frequencies were found in the light scattered by halite [2], NaCl, fluorite [5], CaF2, or by the salts [7] LiF and NaF. In the present paper are described the results of measurements on gypsum, CaSO4•2H20, and a comparison of these with data on ammonium sulfate solution

Buy High Sell Low: Redefining Bean Counting in the Coffee Industry for a Sustainable Future

Charles Manz returns to the JVBL providing ‒ together with several fellow researchers/writers ‒ a case study of a socially responsible business within the coffee industry. Familiar CSR concepts are examined such as Fair Trade and sustainability which foster parity in dealing with buyers while maintaining product quality and reasonable income. The practices of Dean’s Beans, a progressive coffee organization, are examined as a notable demonstration of how a business can fiscally succeed while maintaining a commitment to the triple-bottom-line considerations of people, planet, and profits

Burst Denoising with Kernel Prediction Networks

We present a technique for jointly denoising bursts of images taken from a handheld camera. In particular, we propose a convolutional neural network architecture for predicting spatially varying kernels that can both align and denoise frames, a synthetic data generation approach based on a realistic noise formation model, and an optimization guided by an annealed loss function to avoid undesirable local minima. Our model matches or outperforms the state-of-the-art across a wide range of noise levels on both real and synthetic data.Comment: To appear in CVPR 2018 (spotlight). Project page: http://people.eecs.berkeley.edu/~bmild/kpn

Relationship of hyperglycaemia, hypoglycaemia, and glucose variability to atherosclerotic disease in type 2 diabetes

Objective: Type 2 diabetes mellitus (T2DM) is known to be associated with increased cardiovascular risk. The aim of this study was therefore to investigate the independent effects of hyperglycaemia, hypoglycaemia, and glucose variability on microvascular and macrovascular disease in T2DM. Methods. Subjects with T2DM of 7.8mmol/L (β=15.83, p=0005) was the sole independent predictor of albuminuria in generalised linear regression. Conclusions. This study demonstrates that hypoglycaemia is associated with the occurrence of atherosclerotic disease while hyperglycaemia is associated with microvascular disease in a Caucasian population with T2DM of recent duration.peer-reviewe

AN ASSESSMENT OF APPLIED BIOLOGICAL SCIENCE INTERESTS OF SEVENTH GRADE STUDENTS!

Vocational education programs in high schools should be designed to prepare young people for their next pursuit after graduation. Students\u27 interests, needs, and employment opportunities should form the basis upon which decisions are made concerning what vocational courses to offer in the high school curriculum

An Educational Module for the Utilization of Dexmedetomidine in Patients Undergoing One Lung Ventilation During Thoracic Lung Surgeries to Enhance Oxygenation

Background: During lung surgeries, one-lung ventilation (OLV) produces severe ventilation and perfusion abnormalities that can delay patient recovery. Recent articles suggest that Dexmedetomidine may have protective effects on the lungs when hypoxic conditions exist and may improve hypoxic pulmonary vasoconstriction. Additional literature review is needed to confirm the reproducibility of these findings and generate evidence-based practice recommendations regarding the usage of Dexmedetomidine as an anesthesia adjunct during one-lung ventilation. Aim: This quality improvement project aims to assess the best randomized control trials (RCTs) available regarding the benefits of Dexmedetomidine (DEX) coadministration during one-lung ventilation for pulmonary surgeries. By analyzing current evidence, the authors strive to introduce recommendations for anesthesia professionals that will reduce the prevalence of hypoxia and ventilation/perfusion abnormalities during pulmonary surgeries. Study Selection: Seven RCTs, totaling 419 subjects, were included for this quality improvement project and selected based upon their inclusion of adult human participants undergoing general anesthesia with one-lung ventilation for pulmonary surgeries, written in the English language, from 1999 to 2020, published in scientific/peer-reviewed journals and available for download from the CINAHL, Medline, and EMBASE databases Results: Six of the seven RCTs reviewed reported improved oxygenation amongst the group receiving Dexmedetomidine compared to the control; however, only four studies could establish statistical significance. One article observed a reduction in PaO2 in the DEX group that did not achieve statistical significance. After distribution of the online educational module and pretest and post test surveys, the number of anesthesia providers “very likely” to implement DEX co-administration during OLV increased between pre-test (n=2) and post-test (n=4). Conclusion: Current evidence suggests that Dexmedetomidine coadministration with Propofol or inhalational anesthetic agents during one-lung ventilation will improve oxygenation intraoperatively. The mechanisms through which these benefits occur remains a debate and should be the focus of future research. After receiving a virtual module on the evidence gathered, more anesthesia providers indicate they are “very likely” to incorporate Dexmedetomidine during these types of surgery, signifying willingness to implement evidence-based practice changes

Weekly Versus Monthly Testosterone Administration On Fast and Slow Skeletal Muscle Fibers in Older Adult Males

Context: In older adults, loss of mobility due to sarcopenia is exacerbated in men with low serum T. T replacement therapy is known to increase muscle mass and strength, but the effect of weekly (WK) vs monthly (MO) administration on specific fiber types is unknown. Objective: To determine the efficacy of WK vs MO T replacement on the size and functional capacity of individual fast and slow skeletal muscle fiber types. Design, Setting, and Patients: Subjects were randomized into a 5-month, double-blind, placebo-controlled trial. All subjects (ages, 61–71 y) were community-dwelling men who had T levels \u3c 500 ng/dL. Intervention: Subjects were dosed weekly for 5 months, receiving continuous T (WK, n = 5; 100 mg T enanthate, im injection), monthly cycled T (MO, n = 7; alternating months of T and placebo), or placebo (n = 7). Muscle biopsies of the vastus lateralis were obtained before and after treatment. Main Outcome Measures: Main outcomes for individual slow and fast fibers included fiber diameter, peak force (P0), rate of tension development, maximal shortening velocity, peak power, and Ca2+ sensitivity. Results: Both treatments increased fiber diameter and peak power, with WK treatment 5-fold more effective than MO in increasing type I fiber P0. WK effects on fiber diameter and force were 1.5-fold higher in slow fibers compared to fast fibers. In fast type II fibers, diameter and P0 increased similarly between treatments. The increased power was entirely due to increased fiber size and force. Conclusions: In conclusion, T replacement effects were fiber-type dependent, restricted to increases in cell size, P0, and peak power, and dependent on the paradigm selected (WK vs MO)

Annual Survey of Virginia Law: Employment Law

This article surveys the judicial and legislative developments in Virginia employment law between June 1990 and June 1991. Developments in the areas of worker\u27s compensation and unemployment compensation, each of which has its own distinctive body of law, are outside the scope of this article