gebhart/patrepeval huggingface dataset:
Microdetermination of derivatives of phenols and mercaptans by means of electron capture gas chromatography (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMicrodetermination of derivatives of phenols and mercaptans by means of electron capture gas chromatographyFred K. KawaharaCite this: Anal. Chem. 1968, 40, 6, 1009–1010Publication Date (Print):May 1, 1968Publication History Published online1 May 2002Published inissue 1 May 1968https://pubs.acs.org/doi/10.1021/ac60262a044https://doi.org/10.1021/ac60262a044research-articleACS PublicationsRequest reuse permissionsArticle Views203Altmetric-Citations93LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Initiated chemical vapor deposition of functional polyacrylic thin films (2005)

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.
A New Method of Semi-Permanent Reservoir Monitoring in Deep Water Using Ocean Bottom Nodes (2016)

Deep water Ocean Bottom Node (OBN) systems have delivered high quality full azimuth 3D and 4D seismic data. In this paper, we discuss the development of a new node technology and a new method of employing nodes for reservoir monitoring, wherein, a high-speed underwater optical communications system is utilized to extract data from nodes that have a long deployment capability, without recovering the nodes from the seafloor. This highly repeatable semi-permanent 4D monitoring capability can be implemented at considerably lower cost than with cable based Permanent Reservoir Monitor (PRM) systems. Full azimuth and long offset seismic data acquired with a sparse array of ocean bottom nodes and a dense patch of shots has proven to be a very successful technique for both 3D and 4D imaging below complex salt overburden in the deep water Gulf of Mexico, where more than 25 OBN surveys have been conducted in the last ten years. Deep water OBN 3D and 4D surveys have also been successfully conducted in offshore West Africa and Brazil. Autonomous deep water OBN systems are proven to be very reliable, with 98+% data recovery, and nodes are routinely deployed by a remotely operated vehicle (ROV), amongst field infrastructure and simultaneous operations. Also, for reservoir monitoring, OBN surveys are proven to be highly repeatable, resulting in low 4D noise, NRMS statistics typically less than 10%, which is comparable with that achieved using PRM systems. We are motivated to look for ways to extend current proven node technology to semi-permanent reservoir monitoring in deep water (&gt; 500 m), where the cost and technical, logistic and HSE challenges for PRM installation amongst the infrastructure of a working field are high. Installing a group of autonomous nodes, which is routinely done today, is an attractive alternative to the complex integration of a cabled system with existing facilities. By semi-permanent, we mean the nodes are deployed once, and then multiple surveys are acquired over an extended period of time, before recovery. For this purpose, we have designed and built a node which has sufficient energy storage for a five year on-the-seabed lifetime and a 300 day active recording life, enough for 12 surveys (baseline + 11 monitors) – each having a duration of about 25 days. An enabling technology that makes the semi-permanent Life of Field (LoF) node possible is a proprietary high speed underwater optical communications technology, whereby, data download from the node is performed in situ on the seafloor. Nodes are deployed in "sleep" mode and when needed they are remotely switched on, "health" checked for operational readiness, synchronized with a reference time signal, and have their recording systems activated. Upon completion of the active source period, each node is re-visited to extract the seismic data via the optical communication system and then switched off until the next monitor survey, all without handling the node, but by closely approaching the node with an ROV or an AUV (Autonomous Underwater Vehicle), to effect the optical link.
Low dose hydrochlorothiazide (12.5 to 25 mg daily) as monotherapy in black patients with mild to moderate hypertension* (1995)

The efficacy of low dose (12.5 to 25 mg daily) hydrochlorothiazide (HCTZ) was evaluated by ambulatory blood pressure monitoring (ABPM) in 19 mild to moderate hypertensive (mean daytime 12-h diastolic BP > or = 90 mm Hg and < 115 mm Hg) South African black patients. After a 3-week placebo run-in period, HCTZ was administered for 8 weeks as monotherapy. The mean daytime ABPM was reduced from 159 +/- 13/105 +/- 6 to 145 +/- 11/97 +/- 10 mm Hg (P < .005). Only 6/19 (32%) patients achieved BP control. The 24-h BP load fell from 69% at baseline, to 53% with 12.5 mg HCTZ and to 47% with 25 mg HCTZ daily. There were no side effects but the increase of HCTZ to 25 mg daily was followed by adverse changes (P < .05) in serum potassium levels. It is concluded that low dose of HCTZ monotherapy has only a moderate effect on the BP control and 24-h BP load while the higher 25 mg dose is associated with significant decrease in serum potassium level.
Home from home (2005)

Children’s wards today are cheerful and welcoming, says jane bates. so why don’t we do the same for adults?
Enriching Web Applications with AJAX and JSON (2010)

IE8's changes with respect to AJAX and JSON allow developers to take advantage of some more advanced scenarios that simplify development of dynamic web applications. I used the samples to provide ways of using these features in an interoperable way and have highlighted some of the pitfalls and quirks that you could encounter when testing these features in IE. In the next chapter, I'll focus on some more interoperability scenarios regarding the Document Object Model and IE's JavaScript engine.KeywordsEvent HandlerStorage ObjectPage LoadDocument ModeResponse PageThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
PRaCto: Pseudo Random bit generator for Cryptographic application (2018)

Pseudorandom numbers are useful in cryptographic operations for using as nonce, initial vector, secret key, etc. Security of the cryptosystem relies on the secret key parameters, so a good pseudorandom number is needed. In this paper, we have proposed a new approach for generation of pseudorandom number. This method uses the three dimensional combinational puzzle Rubik Cube for generation of random numbers. The number of possible combinations of the cube approximates to 43 quintillion. The large possible combination of the cube increases the complexity of brute force attack on the generator. The generator uses cryptographic hash function. Chaotic map is being employed for increasing random behavior. The pseudorandom sequence generated can be used for cryptographic applications. The generated sequences are tested for randomness using NIST Statistical Test Suite and other testing methods. The result of the tests and analysis proves that the generated sequences are random.
Angiotensin II stimulation of hydrogen ion secretion in the rat early proximal tubule. Modes of action, mechanism, and kinetics. (1988)

Physiologic concentrations of angiotensin II stimulate sodium transport by intestinal and renal early (SI) and late (S2) proxi- mal tubule epithelial cells. We recently found that hydrogen ion secretion, which effects sodium bicarbonate absorption, was a transport function preferentially and potently increased by angiotensin II in SI cells. SI cells are normally responsible for half of the total renal hydrogen ion secretion. The mecha- nism by which angiotensin II regulates intestinal sodium trans- port is by potentiating sympathetic nerve activity and norepi- nephrine release. Direct control of hydrogen ion secretion by angiotensin II via receptors on epithelial cells has not been previously demonstrated. We now report that stimulation of in vivo hydrogen ion secretion in the rat early proximal tubule by angiotensin II was not mediated via change in nerve activity. Rather, enhanced hydrogen ion secretion by angiotensin II correlated with increased angiotensin II receptor density on epithelial cells in the early compared to late microdissected proximal tubule. Basolateral as well as luminal angiotensin II stimulated bicarbonate absorption. Angiotensin II reduced bi- carbonate permeability and caused alteration in the apparent substrate affinity, but not maximal capacity, of the proximal hydrogen ion secretory system involving the Na+/H' anti- porter.
Some flexural properties of a nylon denture base polymer (2004)

Nylon denture base material could be a useful alternative to poly (methyl methacrylate) (PMMA) in special circumstances such as patient allergy to the monomer. The aim of this study was to evaluate the flexural properties of a nylon denture base material (Lucitone FRS), a conventional compression-moulded heat-polymerized (Meliodent), a compression-moulded microwave-polymerized (Acron MC) and an injection-moulded microwave-polymerized (Lucitone 199) PMMA polymers. The effect of aldehyde-free, oxygen releasing disinfectant solution (Perform) on these properties was also investigated. The flexural modulus and the flexural strength were assessed with a three-point bending test. Specimens were stored in water at a temperature of 37 degrees C for 30 days. For each material, half of the prepared specimens were randomly selected and immersed in the disinfectant 24 h prior to testing. Results were compared statistically at a confidence level of 95%. The result showed that in both the control and disinfected groups, the flexural modulus of nylon was significantly lower than the three PMMA polymers. The flexural strength of nylon was significantly lower than those of Meliodent and Acron MC but was comparable with Lucitone 199. A 24-h immersion in the disinfecting solution increased the rigidity of nylon denture base material.
Classical and Quantum Eigenstates of a Kicked Rotor (1992)

We consider the classical kicked rotor as an eigenvalue problem. We formulate the dynamics on a discrete lattice of size N X N and introduce a classical evolution operator. We then modify the classical evolution operator by coarse-graining the delta functions into gaussians and by introducing some phases. These modifications lead to a semiclassical evolution operator, and they reduce the number of participatingeigenstates from N2 to N. The N surviving eigenstates agree exceedingly well with the corresponding quantum eigenstates.
Gadolinium-Based Magnetic Resonance Contrast Agents at 7 Tesla (2010)

At 7 Tesla, the in vitro r1 relaxivities of Gd-based contrast agents in human blood plasma are lower than those at 3 Tesla. This work may serve as a basis for the application of Gd-based MR contrast agents at 7 Tesla. Further studies are required to optimize the contrast agent dose in vivo.
Iron status and benefit of the use of parenteral iron therapy in pre-dialysis Chronic Kidney Disease patients (2013)

Anaemia is very common in the pre-dialysis CKD population and the prevalence of iron deficiency is high. Intravenous iron supplementation is an effective and safe treatment for the anaemia in the pre-dialysis CKD patients. Response to oral iron was poor.
Use of tRNA-Supplemented Host Strains for Expression of Heterologous Genes in E. coli (2003)

Though widely used, expression of heterologous genes in E. coli can be cumbersome and often fails to yield significant amounts of the desired protein. There are a variety of reasons why a particular heterologous gene fails to yield significant amount of protein, including susceptibility of the protein to degradation or presence of sequences that act as transcriptional pause sites. However, probably the most commonly encountered problem is a mismatch of the codon preference observed in the heterologous gene from the codon usage of the E. coli host. The general problem arises form the fact that due to the redundancy of the genetic code one amino acid can be encoded by more than one codon and different organisms do not utilize each codon at the same frequency (for codon frequencies in E. coli and other organisms, see Table 1). Since E. coli contains 46 different tRNA genes (some of them exist in multiple copies), most codons (but not all) have a corresponding cognate tRNA (1). The relative expression of each tRNA gene is typically matched to the frequency of the corresponding codon in the translated RNA species. Forced, high-level expression of heterologous genes containing codons rarely utilized in E. coli can lead to depletion of the corresponding tRNA pools and subsequently to stalling of the translation process and degradation of the translated mRNA (2–4).
Recent North Sea successes build confidence (1998)

The recent application of underbalanced drilling (UBD) techniques in Shell`s southern North Sea gas fields has provided evidence of the benefits these techniques can deliver compared to a conventional program. In addition, the success of these operations has demonstrated that with the right approach to system design and regulatory compliance within a legislative environment, the techniques developed for land operations can be adapted to mitigate all offshore safety, environmental and operational concerns. Impeccable planning and a team effort resulted in two wells successfully drilled using underbalanced techniques. With confidence in the safety and efficacy of the system, future projects will concentrate on improving efficiency and well productivity.
24-Hour Secretory Pattern of Dehydroisoandrosterone and Dehydroisoandrosterone Sulfate (1975)

Dehydroisoandrosterone (DHA) and cortisol were measured by radioimmunoassay and protein binding techniques respectively in plasma from blood taken at 20-min intervals over 24-h periods in 3 normal men, 2 women with Stein-Leventhal syndrome and a man with a benign adrenocortical adenoma. In all subjects but the latter, DHA and cortisol were episodic and synchronous throughout the entire day; in this patient, continuous secretion of cortisol by the tumor apparently abolished stimulation of the contralateral adrenal, and DHA production was negligible. Dehydroisoandrosterone sulfate analysis in plasma displayed a pattern which, probably because of its origin both by secretion and sulfation and its long half-life showed less synchronicity with DHA and cortisol and less fluctuation than did the free hormones.
Study for Analysis of Pressurized Multi-Mitered PiPe Using Photoelastic Stress Freezing Method and FEM (2002)

There are many pipes in nuclear-energy power stations and chemical plant. In there multi-mitred pipes are seen frequently. They need high safety. Accordingly this study aims at stress analysis of pressurized multi-mitred pipe using photoelastic stress freezing method and finite element method. There are many primary factors affecting the distribution of stress. The study aimed at stress analysis of influences of change in crossed axis angle, radius of fillet curvature ρ, thickness, multi-mitered pipe's length L, number of crossings.
A randomised, controlled study of small intestinal motility in patients treated with sacral nerve stimulation for irritable bowel syndrome (2014)

Clinical.trials.gov, (NCT00919672).
Neutrophil accumulation in the large colon of horses during low-flow ischemia and reperfusion. (1994)

Histomorphologic/morphometric evaluation, leukocyte scintigraphy, and myeloperoxidase activity were used to determine whether neutrophils accumulate in the large colon of horses during low-flow ischemia and reperfusion. Twenty-four adult horses were assigned to 1 of 3 groups: group 1, sham-operated (n = 6); group 2, 6 hours of ischemia (n = 9); and group 3, 3 hours of ischemia and 3 hours of reperfusion (n = 9). Low-flow ischemia of the large colon was induced in horses of groups 2 and 3 by reducing colonic arterial blood flow to 20% of baseline. Radiolabeled (99mTc) autogenous neutrophils were injected at 175 minutes, which corresponded to 5 minutes prior to reperfusion in group-3 horses. Full-thickness biopsy specimens of the left ventral colon were collected at baseline and at 30-minute intervals for 6 hours; a portion of the biopsy specimen was placed in formalin for histologic examination, and the remainder was used to measure mucosal radioactivity and myeloperoxidase activity. There were no differences in baseline mucosal neutrophil index, mucosal neutrophil numbers, submucosal venular neutrophil numbers, mucosal radioactivity, or mucosal myeloperoxidase activity among groups, or over time in group-1 horses. Neutrophils accumulated in the colonic mucosa during ischemia and further increased at reperfusion, as indicated by neutrophil index (morphology) and mucosal neutrophil numbers (morphometry); mucosal neutrophil index was significantly (P < 0.05) greater in group-3 horses during reperfusion than at the corresponding periods of ischemia in group-2 horses. Neutrophil numbers were significantly (P < 0.05) increased in submucosal venules at 10 minutes of reperfusion in group-3 horses and were significantly (P < 0.05) greater in group-3 than in group-2 horses during the interval from 3 to 6 hours. Mucosal radioactivity significantly (P < 0.05) increased at reperfusion in group-3 horses; there was a trend (P = 0.076) toward greater mucosal radioactivity in group-3, compared with group-2 horses, throughout the 3- to 6-hour interval. There were no differences in mucosal myeloperoxidase activity among or within any of the 3 groups over time. Neutrophils accumulated in the large colon of horses during low-flow ischemia and reperfusion. Neutrophil infiltration was detected by histologic examination and leukocyte scintigraphy, but not by measurement of myeloperoxidase activity. The accumulation of neutrophils during ischemia and the further neutrophil infiltration during reperfusion indicate that neutrophils may contribute to reperfusion injury of the large colon.
Solution Processable Low‐Voltage Organic Thin Film Transistors with High‐<i>k</i> Relaxor Ferroelectric Polymer as Gate Insulator (2011)

A relaxor ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene-chlorofloroethylene) exhibits a high relative dielectric constant (k) (∼60). The high-k polymer is used successfully in solution processable low-voltage OTFTs as the gate insulator for the first time. Both n-channel and p-channel OTFTs based on conjugated polymers are fabricated and show carrier mobilities higher than 0.1 cm2 V−1 s−1 at an operating voltage of 3 V.
Standards of Medical Care in Diabetes—2011 (2010)

A. Classification of diabetes B. Diagnosis of diabetes C. Categories of increased risk for diabetes (prediabetes) II
Polyphenylene sulfide (PPS): state of the art and applications (2013)

Polyphenylene sulfide (PPS) is a versatile material that gives extruded and molded components the ability to meet exceptionally demanding criteria. This semicrystalline engineering thermoplastic has outstanding thermal stability, superior toughness, inherent flame resistance, and excellent chemical resistance. It also has high mechanical strength, impact resistance, and dimensional stability as well as good electrical properties. The present review outlines the synthesis methods, characterizations, and electrical and dielectric properties of PPS composite. Its structural and morphological characteristics, studied for advanced applications such as photovoltaic cells, gas sensors, and supercapacitors, are in prospect. In the composite phase, the electric and dielectric properties of PPS are found to be improved.
Three-color optical range finding (1994)

In the known three-wavelength distance-measuring systems two optical wavelengths are used and a microwave is added for air-humidity influence consideration. In our research, which proceeds from results obtained at the National Research Laboratory of Metrology (Japan), the possibility of constructing a three-optical-wavelength ranging system is discussed. We investigate different versions by using a CO(2) laser as the source of the third wavelength. Analysis shows that the three-wavelength system with two lasers (YAG:Nd(3+) laser, which yields first- and second-harmonic radiation, and a CO(2) laser) seems to be optimum. A possible schematic structure of the three-wavelength YAG-CO(2) laser system is given.
Service-Centric Object Fragmentation for Efficient Retrieval and Management of Huge XML Documents (2007)

Vast amount of XML documents raise interests in how they will be used and how far their usage can be expanded. This paper has two central goals: 1) easy and fast retrieval of XML documents or relevant elements; and 2) efficient and stable management of large-size XML documents. The keys to develop such a practical system are how to segment a large XML document to smaller fragments and how to store them. In order to achieve these goals, we designed SCOF model (service-centric object fragmentation model), which is a semi- decomposition method based on conversion rules provided by XML database managers. Keyword-based search using SCOF model then retrieves the specific elements or attributes of XML documents, just as typical XML query language does. Even though this approach needs the wisdom of experts in XML document collection, SCOF model makes it efficient both retrieval and management of massive XML documents.
Geopolymer Development by Powders of Metakaolin and Wastes in Thailand (2010)

Geopolymer has been developed as an alternative material to Portland cement. Geopolymer is based on the polymerization of alkaline activation and oxide of silicon and aluminium. These oxides can be found in many pozzolanic materials such as metakaolin and the wastes from industries and agricultures in Thailand, e.g., fly ash, bagasse ash and rice husk ash. Pozzolanic materials were selected as source materials for making geopolymers into 4 different types. Sodium hydroxide concentration of 10 Molar (10MNaOH) and sodium silicate (Na2SiO3) solutions were used as alkaline activators by the mass ratio of Na2SiO3/NaOH at 1.5. The mixtures were cast in 25×25×25 mm. cubes. After casting, the geopolymers were cured at 80๐C for 24 hrs. in an oven and then at room temperature for 7 days. The pozzolanic materials effects, the Si/Al molar ratio and the Na/Al molar ratio were studied and characterized. An X-ray fluorescence (XRF) was chosen to determine the percentages of silica and alumina in order to verify the proper ratio of the fly ash, Rice husk ash, Bagasse ash and Metakaolin.The study also included the impact on mechanical and physical properties such as compressive strength, water absorption, density and porosity.
Using Singlet Oxygen to Synthesize Natural Products and Drugs (2016)

This Review describes singlet oxygen ((1)O2) in the organic synthesis of targets on possible (1)O2 biosynthetic routes. The visible-light sensitized production of (1)O2 is not only useful for synthesis; it is extremely common in nature. This Review is intended to draw a logical link between flow and batch reactions-a combination that leads to the current state of (1)O2 in synthesis.