gebhart/patrepeval huggingface dataset:
Protein extracts for nutritional purposes from fragile strains of <i>Saccharomyces cerevisiae</i>: Reduction of the nucleic acid content and applicability of the protein extracts (1990)

92% of the cellular proteins from the osmotically fragile strain Sacch. cerevisiae 211 (MATa srbl srb2 tsl) were extracted by one passage in a high pressure disintegrator at 650 atm. After isoelectric precipitation, 60.1% of the proteins were isolated. The protein extract was rich in proteins (60-70%) but also contained 12-13% nucleic acids and 13-14% carbohydrates. Mild conditions were created for simultaneous reduction of nucleic acids and carbohydrates in the lysate prior to precipitation of proteins. Under these conditions the amount of nucleic acids in the protein extract was reduced to 2%, and that of the carbohydrates to 5.7%. As a result of the whole procedure on a pilot scale, 11 culture of Sacch. cerevisiae 211 grown in molasses based nutritional medium yielded 1 g protein extract. The applicability of this protein extract for nutritional purposes was demonstrated by determination of its amino acid composition, acute toxicity tests with Tetrahymena pyriformis and short-term animal nutrition tests. The results showed that the protein extract is a suitable source of SCP for nutritional purposes.
Reliable remote-monitoring electrochemical potentiostat for glucose measurements (2009)

Electrochemical methods have been widely used in the chemical and pharmaceutical industries, which require accurate concentration measurements, chemical reaction detections and analyses. The electrochemical potentiostat, the core element in electrochemical instruments, have been discussed as a hot topic addressing the difficulty of applying high-precision constant voltage and picoampere current measurements. Meanwhile, reliable potentiostats are in demand for complicated industrial environments with noises as well as requirements of remotemonitors. This paper describes a potentiostat for industrial glucose measurement that is not only accurate but also fault tolerant to guarantee high reliability in industrial environments. The instrument uses standard industrial communication protocols, profibus, and a 4–20 mA current loop, for remote control and monitoring. Experimental results show that this design has 0.01 % accuracy with 1 mV resolution for voltage applications and 0.01 % accuracy with 1 pA resolution for current measurements. The design is also shown to be highly reliable in noisy environments.
Victor Zagorodnov: Getting high on glaciers [drilling equipment (2005)

Victor Zagorodnov designs lightweight and highly efficient ice-drilling equipment for use at very high altitudes. He works at Ohio State University's Byrd Polar Research Center, in Columbus, and "on the fly" on mountain peaks in South and North America, in the Himalayas, and on Mt. Kilimanjaro. As an engineer and scientist with the world's premier team of experts on tropical glaciers; helps advance a science that is revolutionizing knowledge about the earth's past and future; stretches his physical and mental faculties to the limit under challenging conditions.
Advances in digital circuit switching architecture (1989)

Today a wide range of communication services are provided by very complex systems embedded in the telecommunications networks which exist in both the public and private domain. The main applications supported are telephony and data, however new applications based on broadband connections will emerge as technology advances. Increasing use of digital techniques and computer control has allowed significant improvements in the quality of communications and has lowered the cost of provision. Erosion of the boundaries between the indigenous service networks is taking place as illustrated by the emergence of the ISDN which enables uniform access to voice and data services. >
Nocturnal Hypertension and Chronic Kidney Disease (2011)

The importance of the kidneys, as well as the renal function curve, in determining the arterial pressure (BP) has been widely-accepted (long-term BP regulation). Our recent studies have suggested that kidneys may participate in the pathogenesis of a circadian BP rhythm (short-term BP regulation). We have postulated that sodium sensitivity of BP is increased by both reduced glomerular ultrafiltration coefficient and by enhancement of tubular sodium reabsorption in chronic kidney disease (CKD). Glomerular filtration rate (GFR) is reduced in the former condition and is augmented in the latter. In patients with high-sodium sensitivity, the nocturnal BP dip is diminished, resulting in non-dipper pattern of circadian BP rhythm irrespectively of the mechanisms causing sodium sensitivity. We have found that in patients with more severe renal dysfunction it took longer “dipping time” for their nocturnal mean arterial pressure to fall below 90% of their daytime mean value and showed non-dipper circadian rhythms for BP and natriuresis. These findings encourage us to postulate that reduced renal capacity to excrete sodium into urine causes nocturnal elevation of BP (i.e. non-dipper) in order to compensate for diminished daytime natriuresis by enhancing night-time pressure-natriuresis. Both high sodiumsensitivity and non-dippers are risks for cardiovascular disease. Investigation on the renal mechanisms of non-dipper and nocturnal hypertension may be the shortest way to solve cardio-renal connection. Keywords: Circadian blood pressure rhythm, sodium sensitivity, non-dipper, natriuresis, chronic kidney disease (CKD), cardio-renal continuum, renal dysfunction, glomerular ultrafiltration coefficient, proteinuria, ventricular hypertrophy
Spectrally narrow emission from organic films under continuous-wave excitation (2007)

The authors observed a narrow emission from a 500-nm-thick codeposited organic thin film, 6wt% 4,4′-bis[(N-carbazole)styryl]-biphenyl (BSB-Cz) doped into a 4,4′-bis(N-carbazole)-biphenyl host, under continuous-wave excitation. Although they observed no clear threshold characteristics on the spectral narrowing, they found that the emission centered at a wavelength of λASE=462nm, corresponding to the zero to one transition of BSB-Cz, has a transverse electric mode with a narrow full width at half maximum of λFWHM=3.4nm, indicating the occurrence of amplified spontaneous emission. No excited state absorptions of singlet and triplet excited states of BSB-Cz are confirmed around λASE, leading to large net gain for the light amplification.
Instantaneous power as a medium for the signature analysis of induction motors (1996)

Preventive maintenance of electric drive systems with induction motors involves monitoring of their operation for detection of abnormal electrical and mechanical conditions that indicate, or may lead to, a failure of the system. Intensive research effort has been for sometime focused on the motor current signature analysis (MCSA). The MCSA techniques utilize the results of spectral analysis of the stator current. Reliable interpretation of the spectra is difficult, since distortions of the current waveform caused by the abnormalities in the drive system are usually minute. In this paper, an alternate medium for the motor signature analysis, namely the instantaneous power, is proposed. By theoretical analysis, computer simulations, and laboratory experiments, it is shown that the instantaneous power carries more information than the current itself. Utilization of the instantaneous power is thus enhancing the reliability of diagnostics of induction motor drives.
Generation of optical pulses as short as 27 femtoseconds directly from a laser balancing self-phase modulation, group-velocity dispersion, saturable absorption, and saturable gain (1985)

We describe an ultrasbort-pulse laser that, under specific operating conditions, balances the mechanisms of conventional passive mode locking and solitonlike pulse shaping in a single resonator to generate optical pulses that are to our knowledge the shortest yet emitted directly from a laser, 27 fsec.
Endothelin receptor expression in idiopathic pulmonary arterial hypertension: effect of bosentan and epoprostenol treatment (2011)

Endothelin receptor antagonists are used to treat idiopathic pulmonary arterial hypertension (IPAH), but human pulmonary arterial endothelin receptor expression is not well defined. We hypothesised that disease and treatment would modify normal receptor distribution in pulmonary resistance arteries of children. Using immunohistochemistry and semiquantitative analysis, we investigated endothelin receptor subtypes A and B (ET(A) and ET(B), respectively), and endothelial nitric oxide synthase (eNOS) expression in peripheral pulmonary arteries of tissue from untreated children with IPAH (n=7), following extended combined bosentan and epoprostenol therapy (n=5) and from normal subjects (n=5). Clinical, haemodynamic and pathological abnormalities were severe and advanced in all IPAH cases. ET(A) was detected in pulmonary arterial endothelial cells of all normal and diseased tissue and cultured cells. Endothelial ET(A), ET(B) and eNOS expression was reduced in patent, plexiform and dilatation lesions of untreated cases, but in treated cases, ET(A) and ET(B) were normal and eNOS increased. In smooth muscle, ET(A) expression was reduced in treated cases but ET(B) expression increased in all arteries of both treated and untreated cases. In summary, ET(A) is expressed on human pulmonary arterial endothelium. In IPAH, combination treatment with bosentan and epoprostenol had a more marked influence on endothelin receptor expression of endothelial than smooth muscle cells.
A Fast Extended 1D Inversion for Triaxial Induction Tools That Allows for Variable Dip (2013)

Triaxial induction tools were used initially for measurement of anisotropic resistivity in laminated formations. Recently, the tools have also been used to derive structural dip from shale zones. One frequently used method for solving for properties for formation evaluation has been the 1D layered model with dipping, anisotropic layers. This model, however, requires the dip to be constant over a relatively long computational window. Using this model in real-world formations with variable dip may lead to large errors in resistivity and dip estimates. This work describes a new inversion that accounts for the effect of dip change, to the first order, within the framework of the 1D model. Compared to the current 1D inversion, the new processing with variable dip takes approximately 10% additional computational time. The computed outputs of the inversion, especially dip and azimuth, much better match the inputs of 3D synthetic models with varying dip and azimuth than before.
Photoluminescent metalloles for chemical sensing of nitroaromatic explosives and chromium(VI) (2005)

Photoluminescent metallacyclopentadienes, or metalloles, are shown to be highly sensitive and selective sensors for oxidant molecules. The method of detection is through electron-transfer quenching of the luminescence of the metallole by the electron-deficient analytes. The capability of metalloles to act as redox sensors results from their low energy LUMO and-small HOMO-LUMO band gap energy. An improved catalytic dehydrogenative coupling synthesis of the explosives sensing polysilole and polygermole is detailed. This new method requires less hazardous reagents and offers significantly improved product yields over traditional Wurtz coupling syntheses. Addition of a hydrogen-accepting alkene co-reagent further improves polymer yield and molecular weight. Dehydrogenative coupling proceeds through either a catalytically homogeneous or heterogeneous mechanism, depending on the catalyst used. Homogeneous catalysts, RhCl(PPh3) 3 and Pd(PPh3)4, produce a significant amount (40%) of the silole dimer, thus limiting chain length and overall yield. The heterogeneous catalyst, H2PtCl6, produces higher molecular weight polymer product. Reaction mechanisms are proposed to account for this difference. Polymetalloles and novel copolymers of diethynylbenzene and dihydrometalloles are investigated as detectors of solid-state nitroaromatic explosives, namely trinitrotoluene, dinitrotoluene, and picric acid. Thin films of the polymers are highly photoluminescent and show visual luminescence quenching in the presence of the explosives. Thin films are prepared via spray coating an organic solution of the polymers and the presence of explosives is confirmed by visual inspection of the film when illuminated with near UV radiation. Detection limits as low as 5 ng are possible. Aqueous TNT detection is possible at 20 parts per billion (ppb) using colloidal polysilole nanoparticles. Fluorescence quenching efficiencies improve by 400% for the nanoparticles relative to the dissolved polymer. Nanoparticles, formed by the precipitation of an organic solution of the polymer with water, are approximately 80 nm in diameter, and have fluorescence lifetimes near 3.8 ns. Functionalization of metalloles can produce redox sensors specific to other analytes. Thus, catalytic hydrosilation of allylamine by methylhydrosilole yields a chemoselective chromate sensor. A colloid of siloleamine nanoparticles is able to detect 100 ppb CrO42-. The sensor is selective to chromate and relatively insensitive to other oxoanion interferents commonly found in water supplies
Arc Synthesis of Hydrocarbons (1974)

A convective arc featuring a novel cathode injection system has been studied on a laboratory scale producing hydrocarbons. Injection gases included H2, CO—H2 mixture, and steam projected against a carbon anode. Also injected was a powdered solid, (CH2)x, entrained in argon. The arc effluent was withdrawn via a hole in the anode through an intermediate hot zone to sampling equipment. A spectrum of operating parameters was studied whereby the hydrocarbon in the product could be varied from pure methane to pure acetylene. A catalytic surface effect on effluent composition within the intermediate hot zone was also observed involving wall temperature, contact surface material, and residence time. The results indicate that this technique may ultimately be applied to coal gasification.
Charles d'Orléans : avec musique ou non ? (1991)

Examinant les conventions qui regissent la mise en page des ballades et des rondeaux au XIV e et XV e siecle, l'A. recuse l'hypothese d'une mise en musique des chansons de Charles d'Orleans
The Valproic Acid Metabolite E-2-n-Propyl-2-Pentenoic Acid Does Not Induce Spina bifida in the Mouse (1992)

The antiepileptic drug valproic acid (VPA) has been implicated as a human teratogen causing spina bifida aperta. Recently we developed a mouse model inducing spina bifida aperta and occulta with VPA. In a search for novel antiepileptic agents the VPA metabolite E-2-n-propyl-2-pentenoic acid (2-en-VPA) had been developed. In the mouse, 2-en-VPA exhibits anticonvulsive potency similar to VPA but very low teratogenic potency (induction of exencephaly). We have now compared VPA and its metabolite 2-en-VPA in regard to induction of spina bifida in our mouse model. 2-en-VPA was administered 3 times during the period of gestation most sensitive for the induction of spina bifida aperta with VPA: on day 9 of gestation at 0, 6 and 12 h. The following doses were injected (in mmol 2-en-VPA-Na/kg): (a) 3 x 2.1, (b) 3 x 2.7 (the equimolar dose of VPA is the threshold dose for induction of spina bifida aperta) and (c) 3 x 3.0 (the equimolar VPA dose produced spina bifida aperta). 2-en-VPA did not induce spina bifida aperta in the mouse in any of these groups. We then investigated the induction of spina bifida occulta in the three dose groups. Spina bifida occulta is a less serious form of spina bifida and may provide a sensitive method to estimate the potency of a compound to induce more severe forms of spina bifida. This malformation was demonstrated in alcian-blue- and alizarin-red-stained fetal skeletons by measurements of the distance between the cartilaginous ends of each vertebral arch.(ABSTRACT TRUNCATED AT 250 WORDS)
Single-Source Approach to Cubic FeS<sub>2</sub> Crystallites and Their Optical and Electrochemical Properties (2005)

Cubic FeS2 crystallites have been synthesized via a single-source approach using iron diethyldithiocarbamate as precursor under hydrothermal conditions. The sample is characterized by XRD, IR, TEM, and FESEM. The optical properties of the as-prepared FeS2 reveal that there exists a red shift compared with that of bulk materials. Meanwhile, the electrochemical properties of FeS2 demonstrate that it delivers a large discharge capacity, which might find possible application as an electrode material in lithium cells. It is also found that the reaction temperature is of importance to the formation of cubic FeS2 crystallites.
Chain-growth cationic polymerization of 2-halogenated thiophenes promoted by Brønsted acids (2014)

Brønsted acids are found to be effective and generally applicable catalysts for inducing the cationic chain-growth polymerization of a wide variety of 2-halogenated-3-substituted-thiophenes.
Local tumor hyperthermia using a computer‐controlled microwave system (1982)

A minicomputer-based system was designed to control the microwave (2.45-GHz) power to four local hyperthermia applicators. Errors in temperature measurement, due to electromagnetic field interactions with small thermocouple probes, are minimized by sampling the temperature only when the microwave power is off. The programmable controller can regulate the temperature in tumors in 0.1 degree C increments from 30 to 60 degrees C. This technique reduces temperature differences throughout the tumor at steady state to less than 0.4 degrees C and prevents skin burns.
Numerical study of Ar/CF4/N2 discharges in single- and dual-frequency capacitively coupled plasma reactors (2003)

A one-dimensional particle-in-cell/Monte Carlo model is developed to study capacitively coupled (cc) radio-frequency discharges in a gas mixture of Ar, CF4, and N2. The charged species, which are followed in the model, are: Electrons and Ar+, CF3+, N2+, F−, and CF3− ions. The simulation considers electron – neutral (Ar, CF4, and N2) collisions, various kinds of collisions of ions with neutrals, positive–negative ion recombination, and electron–ion recombination. The model yields results for electron and ion densities, fluxes and energy distributions, collision rates and electric field, and potential distributions. The simulations are performed for a 0.8/0.1/0.1 ratio of Ar/CF4/N2 mixture at a pressure of 30 mTorr in single (13.56 MHz) and dual frequency (2+27 MHz) cc reactors and a comparison between the two frequency regimes is made. Results show that the structure of the discharges is electronegative in both cases. F− and CF3− ions are the main negative charge carriers in the single and dual frequency regime, respectively. In the presence of low-frequency (2 MHz) and a strong electric field, the light F− ions are no longer confined in the bulk plasma and they partially respond to the instantaneous electric field. The calculated electron energy probability function profiles can be approximated to a Druyvesteyn and bi-Maxwellian distribution with high-energy tails in the single- and dual-frequency regime, respectively. The ion energy distribution is narrow with one outstanding peak in the single-frequency scheme, whereas it is wide and bimodal in the dual-frequency scheme.
Genetic data and electronic health records: a discussion of ethical, logistical and technological considerations (2013)

By ensuring the efficient and effective incorporation of genetic data into EHRs, HIT developers will play a key role in facilitating the delivery of personalized medicine.
Forward-link frequency reuse efficiency of power controlled CDMA cellular system (2002)

The effects of the propagation path loss coefficient (/spl gamma/) and power control on the forward-link frequency reuse efficiency (K) of a direct sequence code division multiple access (CDMA) cellular system is investigated. A simple analytical model is developed to express the interference received by a user in the home cell from other base stations based on the inverse power-of-distance /spl gamma/ law. Proper factors for optimum power control performance are estimated according to /spl gamma/. With these factors, K is improved to twice that without power control for /spl gamma/ between 4.5 and 2.5. The degradation in K as /spl gamma/ is increased is significantly less for CDMA than for the traditional FDMA and TDMA cellular systems.
A Binary Multiplication Scheme Based on Squaring (1971)

Using the formula A · B=[(A+ B)/2] <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -[(A-B)/2] <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , the binary multiplication problem is reducible to that of decomposing the square of P 0 · P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf> P <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ... P <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</inf> into a sum of two or three quantities. For the eight-bit case, a study of the multiplication parallelogram suggests p <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> = R+ S+ T, where Pl and p8 appear only in R, and P2, P7 appear only in R and S. Each bit in T involves the ORing of no more than four terms, each involving no more than four Boolean variables. For a two-input adder, S and Tare combined into a six-variable problem, each bit may have up to 14 terms. The six-and four-bit problems are degenerate cases with R=0 and R= S=0, respectively.
Plasma Estriol Levels after Intramuscular Injection of Estriol and Two of Its Esters<sup>1</sup> (1991)

Twelve female volunteers from Berlin and 9 from Stockholm, all using a contraceptive pill (30 micrograms ethinyl estradiol and 150 micrograms levonorgestrel), received an intramuscular injection of estriol (E3; 1 mg in oil) on day 5 of withdrawal bleeding. Blood samples were collected at increasing time intervals during 4 weeks. Three months later, on day 5 of their withdrawal bleeding, 6 women were given intramuscularly (in oil) estriol 3,17-dipropionate (E3-prop) and 15 women estriol 3,17-dihexanoate (E3-hex). The doses were equivalent to 5 mg of estriol, i.e. 6.94 and 8.90 mg, respectively. Blood samples were collected during a period of 9 weeks. Estriol was analyzed by radioimmunoassay in all plasma samples. The average half-life of E3 ranged from 1.5 to 5.3 h after the administration of E3. It was 12.7 h and between 187 and 221 h after the administration of E3-prop and E3-hex, respectively. The average areas under the curve (in nmol.l-1.h) of E3 were between 82.5 and 161 after the administration of E3-prop or E3-hex, and between 27.1 and 37.9 when E3 had been given. As E3 was administered in a 5-fold lower dose than the esters, the areas under curve appeared to be comparable. Thus, the total exposure to E3 seemed to be almost independent of the type of E3 derivatization, while the time and intensity of exposure were very different.
STUDIES ON THE UPTAKE OF RAGWEED POLLEN ALLERGENS BY POLYAMINOSTYRENE (1962)

Polystyrene (PS), polyaminostyrene (PAS), and the diazonium salt of polyaminostyrene (DPAS) were compared for their capacity to bind ragweed pollen allergens. PAS was slightly more efficient than DPAS in this respect although the binding was non-specific. Nevertheless, the allergens could not be eluted from PAS with saline. PS appeared to be unable to bind the pollen allergens. DPAS coupled to tyrosine was as efficient as DPAS in binding the pollen allergens.