Articles Related to science

In literature are reported various use of activated charcoal AC and derivates in biopharmaceutical purifications.Aim of this work is to verify impurity proficle when using this technology.Various commercial products are reported here but it is not the scope of this work put in relation with any toxicological reaction: only to describe the technique used in this field.Because various drugs and bioproduct need purification steps it is if of interest to see some material science peculiarity

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The any field of science they have many different techniques method for examine the substance. There have been several major advances in the use of Raman spectroscopy instruments. This method is now a full established method along with, infrared spectroscopy. The process ultimately led to its entry into the forensic science laboratory, and to simplify the process, this article introduces a comprehensive review of Raman spectroscopy; emphasizes how and why this less commonly used method can be a very useful tool for analysing a various evidence. The concepts and principle of Raman spectroscopy are described in two categories the first categories of this article which includes theory, instrumentation, and spectrum data obtained using infrared and Raman techniques for numerous analyse and the Second categories discusses forensic applications of Raman spectroscopy to examine various types of evidence and substance. In this article we study how to examine forensic evidences by using the Raman spectroscopy and make review report on it.

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The definition of law is broadly defined as the whole of the regulations that organize the general society and that determine the sanction power of the government.

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Handwriting is a visible speech which is not spoken but written. There are various internal and external factors that might cause variation in handwriting

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Most forensic investigations are done based on the forensic expert’s level of expertise.

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The emergent threat of terrorism activities has caused an urgent need of improved forensic explosive analysis. Complex matrices, limited samples, and confusing interpretations serve as challenges for a forensic chemist in order to link the evidence to the perpetrator of the crime.

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2,4-Dinitrophenol (DNP) is readily available online as an unapproved weight loss supplement. Severe systemic toxicity and death have been reported following DNP use.

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IDDs are among the major public health problems of the world. Nearly two billion individuals worldwide and about 350 million Africans are at risk of iodine deficiency and face many risks from its deficiency and complications. Poor knowledge related to iodine diet and iodized salt utilization were some of the factors. Poor Educational status, Occupation and Sources of Information were frequently cited factors related to Knowledge on iodized salt consumption. Iodized salt is an effective and cheap method to prevent and control iodine deficiency in the community.

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Calf morbidity and mortality are important causes of economic losses on dairy farms worldwide. A cross-sectional study and clinical observation was conducted from November 2016 to April 2017 with the objective of determining calf morbidity and mortality and to investigate the potential risk factors for mortality and morbidity in Sululta and its environs. A total of 312 respondents engaged in market oriented small holder dairying were interviewed using a structured questionnaire survey about their farm and calf management practices and major calf health problems encountered and diseases that causes mortality. The overall magnitude of morbidity and mortality of calves were 31.0% and 58.37%, respectively. The major calf diseases found were diarrhea (69.34%), pneumonia (16.54%), liver fluke (2.4%), bloat (2.0%), joint ill (2.4%) and other cases (8.04%). Risk factors such as weaning age, breed and awareness of colostrums, feeding of calf and overall farm management were included. In this study 80.3% of calf mortality occurs under age 3 month and 19.42% is above 3 month. Based on laboratory examination, Salmonella and E.coli were detected from diarrheic calves. Salmonella found at rate of 2/29 (3.6%) and E.coli found at only genus level. In conclusion, the magnitude of calf morbidity and mortality found in this study were much higher than economically tolerable level and could greatly affect the productivity of the dairy farms through mainly decreasing the availability of replacement stock and production of milk. It is therefore, suggested that implementation of improved calf and farm management practices and proper environmental protection in the study areas would significantly reduce calf mortality and morbidity.

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Synthetic marijuana compounds are more potent than ∆9-tetrahydrocannabinol (∆9-THC) and are known to produce a wide variety of clinical symptoms including cardiac toxicity, seizures, and death. Erratic driving by a 45 y/o male was witnessed in the fall of 2017 and roadside evaluation of the driver by the responding law enforcement officer concluded that the driver was intoxicated. Comprehensive analysis of the cigarettes by gas chromatography-mass spectrometry detected the synthetic cannabinoid 5-fluoro-ADB (5F-ADB or 5F-MDMB-PINACA). Validated forensic liquid chromatography-tandem mass spectrometry (LC-MS/MS) methods were used to detect the 5-fluoro ADB metabolite 7 (26.37 ng/mL) in the driver’s blood sample. No other drugs were detected. This case report is one of the first to conclusively show that designer synthetic cannabinoids, commonly referred to as “K2” and “Spice”, can significantly impair driving at relatively low concentrations.

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The focus of this research is aimed specifically at the application of near-infrared spectroscopy (NIRS) in exercise and sport science. NIRS is able to monitor the performance of muscle and cerebral tissue and evaluate their role during physical activity. By monitoring tissue oxygenation, an NIRS device is useful in several areas, which may benefit from its applications.

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We propose a novel strategy to predict unknown data from a smaller sample size by using compressive sensing which is one of the information technology used in artificial intelligence. In this study, we applied the compressive sensing to an empirical sample of clinical trials comprising of two groups. Each group required the time data of 25 patients but the data of 12 more patients had to be acquired to satisfy alpha and beta errors.

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Spiritual health care requires teamwork and collaboration between the doctor, nurse, psychologist, clergyman, and social worker who have completed required inter-professional spiritual health training, during and after their academic education. This study was conducted to “design inter professional spiritual health care education program for Students of Health Sciences.

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Institutionalization and internationalization of modern interdisciplinary research belong to the essential components of scientific communications. Our purpose was to analyze scientometrically the dynamic science institutionalization on colorectal tumour markers as reflected in four information portals. In June 2017, a retrospective problem-oriented, title-word based search was performed in Web of Science Core Collection (WoS), MEDLINE and BIOSIS Citation Index (BIOSIS) of Web of Knowledge as well as in Scopus for 1987-2016.

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By reporting a case series from a referral hospital we aimed to determine the treatment options and outcomes of one of the serious complications of the labour uterine atony refractory to the medical treatment. In this study, a total of 58 postpartum uterine atony cases refractory to uterotonic treatment and managed with intrauterine balloon tamponade, B-Lynch suture, internal iliac artery ligation or hysterectomy was a retrospectively analyzed. Initially, thirty two cases managed with intrauterine Bakri balloon tamponade and six B-Lynch compression sutures alone, in eight cases both procedures were done together. Eight cases managed with internal iliac artery ligation and four hysterectomies. Our success rate with intrauterine Bakri balloon tamponade, B-Lynch compression suture and internal iliac artery ligation were 84.4%, 83.3%, 75% respectively in stopping postpartum haemorrhage regarding uterine atony and the most successfull rate was obtained with the Bakri balloon tamponade in the combination with B-Lynch compression suture 87.5%. The median estimated blood loss was 2018ml, intraoperative median hemoglobin was 5.8 mg/dl and the median amount of blood transfused was five units, the median volume infused into balloon was 285ml; balloon was in place for a median duration of 36 hours. In 6 cases Bakri balloon tamponade with or without B-Lynch compression sutures failed to stop haemorrhage and hysterectomy required. In two patients Asherman’s syndrome and infertility, in two patients’ amenore were developed and uterine prolapse was observed in 2 patients, one of which was uterine necrosis. No maternal mortality was observed.

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The results are presented of obtaining anodic aluminum oxide with an ordered pore arrangement by employing two anodizing modes - galvanostatic mode and combined (galvanostatic + potentiostatic) mode, at high values of the current density and voltage. Use has been made of an oxalate electrolyte and a complex electrolyte comprising oxalic acid and phosphoric acid. Scanning electron microscopy has been used to investigate the surface morphology of the barrier and porous layers and to determine pore sizes and inter-pore distance.

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Self-organized anodic porous alumina films with hexagonal pore lattice have attracted a considerable attention for biological arrays and confinement of various organic probes dyes in solutions. A molecular structure with axial symmetry in bis-heterocyclic indole chains and conjugate system, such as cyanine fluorophore Cy3 dye, was investigated here with respect to its fluorescence when loaded in the anodic alumina pores.

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Two basic reactions occur during the anodizing of aluminum: 1) the aluminum is consumed and 2) an oxide grows. By accepting this statement as true, the anodizing process can be viewed as a corrosion process, and anodizing can be modeled using the Tafel Equation. Anodizing process parameters of electrolyte chemistry and concentration, temperature, aluminum substrate resistance and current density are presented as they relate to the Tafel Equation and how they impact the anodic aluminum oxide structure and properties. Understanding this relationship is consequent in making anodizing an engineering process, one that enables tuning the structure such that it yields distinct characteristics to fulfill design and application requirements.

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Human odor detection technologies have drawn attention due to the wide possibility of potential applications they open up in areas such as biometrics, criminal investigation and forensics, search for survivors under rubble, and security checkpoint screening. Gas chromatography/mass spectrometry (GC/MS) has been the most successful and powerful analytical approach developed to date for human odor analysis, and hundreds of human odorants have been identified using this tool.

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The application of electronic-nose (E-nose) technologies in forensic science is a recent new development following a long history of progress in the development of diverse applications in the related biomedical and pharmaceutical fields. Data from forensic analyses must satisfy the needs and requirements of both the scientific and legal communities. The type of data collected from electronic-nose devices provides a means of identifying specific types of information about the chemical nature of evidentiary objects and samples under investigation using aroma signature profiles of complex gaseous mixtures containing volatile organic compounds (VOCs) released from manufactured products and parts of the human body. E-nose analyses also provide useful qualitative information about the physicochemical characteristics and metabolic conditions of human subjects without the need for time-consuming analyses to identify all chemical components in human-derived volatile mixtures.

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Carbon nanotube (NT) based electronic vapor sensors were tested against synthetic sweat solutions, consisting of 13 volatile organic compounds (VOCs) in saline, in order to probe the device ability to analyze and differentiate vapors derived from complex biological samples.

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The collection of human odor volatiles is of interest to forensic applications as a path to investigate canine scent discriminations in legal investigations. A study using a selected array of previously identified human odor compounds has been conducted to determine the retention and release capabilities of five (5) natural and synthetic fabric types, cotton (mercerized fabric and gauze matrix), polyester, rayon and wool.

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The anodization of aluminum foils having micrometer thickness is a common process and results in hexagonally self-ordered alumina membranes. However, anodic aluminum oxide (AAO) membranes fabricated from nanometer-thin films present new challenges to the anodization process, since aluminum films adheres poorly on supporting substrates and the smoothness of the film is highly related to the kind of substrate.

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Anodisation of pure titanium has been carried out in sulphuric and in phosphoric acid solutions at potentials ranging from 50 to 150V. The SEM and AFM morphological analysis indicates that, within this potential range, oxidation in sulphuric acid solution produces better developed mesoporous oxide layers.

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We investigated a method for preparation of ordered nanopore arrays with the interpore distance of 60 nm by guided self-organization of anodic aluminum oxide with a prepatterned array of pits in the starting Al film.

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The design of an electrochemical reactor for the preparation of self-supported comparatively thin (up to 10 μm) and large area (up to 50 cm2) anodic alumina membranes is described allowing growth of porous alumina at high applied potential (up to 150 V) without burning.

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Vertical Cu2ZnSnS4 (CZTS) nanowire arrays have been synthesized via two-step electroplating method into anodized aluminum oxide template. For deposition of CZTS nanowires, anodized aluminum oxide (AAO) was used as the growth mask for the growth of the nanowires. AAO templates with hole sizes of 70 nm in diameter were used in the experiments.

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Anodic aluminum oxide doped with vanadyl citrate chelate complex anions was formed by a two-step self-organized anodization in 2 wt. % sulfuric acid containing 0.04 M V2O5 and 0.08 M citric acid at voltage range 13-23 V, and at 0 and 15 oC. The combination of two temperatures and at least four voltages (depending on the applied temperature) was applied as the operating conditions of anodization.

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In this paper, we report on the synthesis of BaTiO3 nanowires via the anodic aluminum oxide template method. To fill in the precursors of BaTiO3 into anodic aluminum oxide templates, the vacuum and drop loading method developed in our previous study was used. Ba(CH3COO)2 (barium acetate) and C12H28O4Ti (tetraisopropyl orthotitanate) were used as Ba and Ti sources, respectively. Anodic aluminum oxide membranes with the through-hole diameter of ~200 nm were used as the template for BaTiO3 nanowires.

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