gebhart/patrepeval huggingface dataset:
Effect of precipitation and aging on porous structure of aluminium hydroxide. I. Statistical treatment of experimental data (1991)

The analysis of variance (ANOVA) was used to test the effect of changes of temperature and pH of precipitation, the time of aging and the addition of surfactants on the porous structure of dried aluminium hydroxide (containing sulphate ions). Changes in precipitation temperature effect the structure of samples, the most pronounced effect being observed in the region of large and small pores. The less distinct effect is exerted by pH of precipitation which affects especially small pores. The time of aging up to 48 h has little effect; it affects the volume of large and medium pores. The addition of surfactants during precipitation and washing leads to the increase of large and medium pores volume. Surfactants eliminate relatively efficiently the effect of aging time. Cationic and nonionic surfactants act similarly, but with different intensity, affecting the porous structure of aluminium hydroxide.
Efficient block implementation of exact sequential least-squares problems (2003)

An efficient blockwise algorithm, named the block sequential least-squares (BSLS) algorithm, is presented for sequentially solving exact LS problems in real time. The information is carried from block to block by iterating some correlation vectors. The average operations of the BSLS are fewer than sample-by-sample fast RLS algorithms. The BSLS algorithm allows efficient use of the FFT technique to make gains in computational complexity savings. It is shown that the new algorithm can provide improved numerical features over the existing fast-RLS algorithms due to the new adaptation version.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Evaluation of Hypermixing for Thrust Augmenting Ejectors (1974)

Steady-state distortion levels produced during full scale PG operation as evaluated in terms of IDC (circumferential) and IDR (radial) distortion parameters were generally less 0.02 and nominally 0.01 or less as previously realized in the model test. Figure 10 summarizes the circumferential planarity in terms of phase and amplitude. The probe readings from two of the rakes, 180° apart, at the engine IGV plane were averaged to obtain these summary results. Such a comparison indicates excellent circumferential planarity over the complete range of the test data. A similar summary of radial planarity characteristics is presented in Fig. 11. In this case, all the probe readings from 2 selected radial immersions were averaged. Radial immersion B is the tip and D is the hub ring. The hub ring probes had the most deviation from those in any of the other rings, thus the results of Fig. 11 represent the worst case.
Three-Dimensional Wideband Beamforming for Imaging Through a Single Wall (2008)

Through-the-wall imaging and urban sensing is an emerging area of research and development. The incorporation of the effects of signal propagation through wall material in producing an indoor image is important for reliable through-the-wall mission operations. We have previously analyzed wall effects, such as refraction and change in propagation speed, and designed a wideband beamformer for 2D imaging using line arrays. In this letter, we extend the analysis to 3D imaging via delay-and-sum beamforming in the presence of a single uniform wall. The third dimension provides valuable information on target heights that can be used for enhancing target discrimination/identification. Supporting simulation results are provided.
Progress in Synthesis of Highly Active and Stable Nickel‐Based Catalysts for Carbon Dioxide Reforming of Methane (2015)

In recent decades, rising anthropogenic greenhouse gas emissions (mainly CO2 and CH4 ) have increased alarm due to escalating effects of global warming. The dry carbon dioxide reforming of methane (DRM) reaction is a sustainable way to utilize these notorious greenhouse gases. This paper presents a review of recent progress in the development of nickel-based catalysts for the DRM reaction. The enviable low cost and wide availability of nickel compared with noble metals is the main reason for persistent research efforts in optimizing the synthesis of nickel-based catalysts. Important catalyst features for the rational design of a coke-resistant nickel-based nanocatalyst for the DRM reaction are also discussed. In addition, several innovative developments based on salient features for the stabilization of nickel nanocatalysts through various means (which include functionalization with precursors, synthesis by plasma treatment, stabilization/confinement on mesoporous/microporous/carbon supports, and the formation of metal oxides) are highlighted. The final part of this review covers major issues and proposed improvement strategies pertaining to the rational design of nickel-based catalysts with high activity and stability for the DRM reaction.
The preparation and histomonastatic activity of some haloethylimidazoles (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe preparation and histomonastatic activity of some haloethylimidazolesDean E. Welch and Robert D. VatneCite this: J. Med. Chem. 1968, 11, 2, 370–371Publication Date (Print):March 1, 1968Publication History Published online1 May 2002Published inissue 1 March 1968https://pubs.acs.org/doi/10.1021/jm00308a044https://doi.org/10.1021/jm00308a044research-articleACS PublicationsRequest reuse permissionsArticle Views66Altmetric-Citations5LEARN 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
Effects of light, oxygen, and substrates on steady-state levels of mRNA coding for ribulose-1,5-bisphosphate carboxylase and light-harvesting and reaction center polypeptides in Rhodopseudomonas sphaeroides (1985)

The mRNA levels specific for ribulose-1,5-bisphosphate carboxylase, light-harvesting I polypeptides alpha and beta, and reaction center polypeptides L and M were assayed by use of a series of DNA probes specific for each cognate mRNA. Both the steady-state amounts and sizes of the specific mRNAs were measured as a function of the light intensity incident to the culture, the presence or absence of oxygen, and the type of substrate present in the growth medium. Northern hybridization revealed at least two and possibly three transcripts for ribulose-1,5-bisphosphate carboxylase. The cellular level of mRNA specific for ribulose-1,5-bisphosphate carboxylase increased in consort with enzyme activity as a function of both light intensity and reducing state of the substrate. Neither mRNA nor enzyme activity was detectable in aerobically grown cells. For the light-harvesting I and reaction center polypeptides there exist two transcripts, the larger of which appears to be a polycistronic mRNA possessing information for all four polypeptides and a smaller transcript specific for only the alpha and beta polypeptides of the light-harvesting I complex. The regulation of each of these mRNAs was affected by light and oxygen, but was not significantly affected by the oxidation-reduction state of the substrate.
Dual-beam array of microstrip leaky-wave antennas (1998)

The authors present a small series-fed array of microstrip leaky-wave antennas (LWAs) operating at 6.85 GHz and showing a narrow dual-beam pattern (17° × 22°). The excitation is provided by a slotted coplanar waveguide. This type of antenna could be used as a radar sensor in Janus systems for contactless measurements of velocity and distance.
Signal Transmission Modeling of the Intrabody Communication and Experimental Analyses (2007)

人体内通信は, 人体を通信媒体とみなしてウェアラブル機器間での情報伝送を行う技術であるが, 詳細な信号伝送メカニズムはいまだ解明されていない。本研究では, 線状アンテナへの給電メカニズムを人体内通信に適用することにより, 送受信機のさまざまな電極配置においてゲインの大小関係を説明可能な伝送モデルを提案した。人体に接触させる電極数を変えてゲインを測定し, 送信機2電極, 受信機1電極をそれぞれ人体に接触させると最も伝送効率が高くなることを示した。また, 送受信電極を信号伝送経路に沿った方向に配置することがよいことを示すとともに, 人体に近接していれば非接触でも人体内通信が可能であることを確認した。
Dehydrogenation by Organometallic Compounds (1938)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDehydrogenation by Organometallic CompoundsHenry Gilman and Chester W. BradleyCite this: J. Am. Chem. Soc. 1938, 60, 10, 2333–2336Publication Date (Print):October 1, 1938Publication History Published online1 May 2002Published inissue 1 October 1938https://pubs.acs.org/doi/10.1021/ja01277a016https://doi.org/10.1021/ja01277a016research-articleACS PublicationsRequest reuse permissionsArticle Views153Altmetric-Citations21LEARN 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
On the use of Markov Decision Processes in cognitive radar: An application to target tracking (2018)

In this paper we examine the radar-communications coexistence problem by modeling the radar environment as a Markov Decision Process (MDP), and then applying reinforcement learning to solve the optimization problem. The radar environment consists of a single moving target and a communications system that has to coexist with the radar. The communications system has several different modes: constant, intermittent, and triangular frequency sweep. We demonstrate how the MDP framework and reinforcement learning can be used to help the radar predict which bands the interferer will use and utilize bands that minimize interference, which in turn helps the radar optimize between range resolution and SINR.
Effect of inspired CO2 on ventilation and perfusion heterogeneity in hyperventilated dogs (1993)

We studied the effect of inspired CO2 on ventilation-perfusion (VA/Q) heterogeneity in dogs hyperventilated under two different tidal volume (VT) and respiratory rate conditions with the use of the multiple inert gas elimination technique. Dogs anesthetized with pentobarbital sodium were hyperventilated with an inspired fraction of O2 of 0.21 by using an increased VT (VT = 30 ml/kg at 18 breaths/min) or an increased respiratory rate (VT = 18 ml/kg at 35 breaths/min). The arterial CO2 tension (PaCO2) was varied to three levels (20, 35, and 52 Torr) by altering the inspired PCO2. The orders of type of ventilation and PaCO2 level were randomized. Compared with normocapnia, VA/Q heterogeneity was increased during hypocapnia induced by increased respiratory rate ventilation, which was indicated by an increase in dispersion indexes and arterial-alveolar inert gas partial pressure difference areas (P < 0.01). In contrast, VA/Q heterogeneity was not affected by hypocapnia when a large VT ventilation was used. Under the conditions of our study, hypercapnia did not result in statistically significant changes in VA/Q heterogeneity with either type of ventilation. Increased VT ventilation reduced dead space at all PaCO2 levels (P < 0.01) and reduced the log standard deviation of the ventilation distribution during normocapnia (P < 0.05) and hypocapnia (P < 0.01). We conclude that hypocapnia increased VA/Q heterogeneity when hyperventilation was achieved with a rapid respiratory rate. Therefore, a lack of improvement in VA/Q matching with inhaled CO2 may be associated with the use of a large VT. These data suggest that hypocapnic bronchoconstriction may be important in mediating hypocapnia-induced VA/Q inequality in dogs.
Hepatitis C virus variants and the role of genotyping. (1995)

Hepatitis C virus demonstrates considerable divergence in nucleotide sequence. This variation may affect virus detection, disease outcome, and the effectiveness of interferon treatment. For example, infection with genotype 1 is associated with a lower response rate to interferon treatment. Hepatitis C virus can be classified into six distinct types, comprising at least 74 different subtypes. Both types and subtypes are subject to geographical differences in distribution, presumably reflecting the epidemiological history of the virus. However, because this history may be blurred by migration and by commerce in blood products between regions, screening and typing assays must recognize both the major indigenous and more exotic virus genotypes. Little information exists about the role of virus sequence variation in screening for hepatitis C virus antibodies, but there is some evidence that the reactivity of current serological screening assays for hepatitis C virus is genotype dependent. In the future, screening assays may need to include antigens specific for different virus types or may need to be designed with regard to the particular types found in a certain area. Antigenic variation may also mean that an effective vaccine needs to be multivalent to protect against all genotypes present in a given region. There are several polymerase chain reaction-based methods of distinguishing between hepatitis C virus variants. These methods must be continually updated, however, as new sequence variants are discovered. Alternative genotyping assays are based on the host's serological response to virus infection, but these cannot distinguish between virus subtypes and are unsuitable for immunocompromised patients. As more countries are sampled, it is likely that more genotypes will be identified and this may help elucidate the origins of hepatitis C virus. Detailed epidemiological studies may delineate past and current routes of transmission.
Theory of reduced built-in polarization field in nitride-based quantum dots (2010)

We use a surface integral method to show that the polarization potential in an InGaN/GaN quantum dot (QD) grown along the [0001] direction is strongly reduced compared to that in a quantum well (QW) of the same height. We use simple analytic expressions and different dot geometries to show that the reduction originates from two effects (i) the reduction in the QD [0001] surface area and (ii) strain redistributions in the QD system. The In composition can therefore be increased in a QD compared to a QW, enabling efficient recombination to longer wavelengths in InGaN QD structures.
The Pen Pal Partnership Project: Connecting Theory to Practice (2011)

Her research interests include elementary education, experiential learning, and practical application of research that positively impacts students; she has a particular interest in integrating standards with kinesthetic
Projecting Medical Supply Requirements for a Highly Mobile Forward Resuscitative Surgery System (1999)

For every casualty that dies of wounds in a hospital, nine have died prior to arriving. The challenge to medical planners becomes the placement of highly mobile, resuscitative surgery units as close to the point of injury as possible. The primary objective of this study was to determine the medical supply requirements for a highly mobile forward resuscitative surgical system (FRSS). To achieve the required level of mobility, FRSS procedures were limited to those that could be conducted in an abbreviated, staged manner. Projecting materiel requirements involved four primary steps. First, the patient population was determined. Next, treatment profiles detailing the step-by-step process of providing a resuscitative intervention for each patient were developed. From the profiles, individual clinical tasks were derived. Once the individual clinical tasks had been identified, the materiel required to conduct them was assigned. Each data element was then organized into a model that described the patient work load and treatment process for an FRSS. Finally, a hypothetical patient stream, using the probability of each patient occurring was created to project the medical supply requirements for an 18 patient FRSS capability. Results of the study showed 59 patient types as FRSS candidates and that 74 primary clinical procedures would be performed on them within the three functional areas of triage, operating room, and post-op. Furthermore, 277 medical items, weighing 1375.0 pounds would be required to support the projected patient workload. The methodology used in the current study was designed to support the examination of multiple facets of the Marine Corps field medicine.
Accurate prediction of protein structures and interactions using a three-track neural network (2022)

Brief summary: This study reveals a Deep Learning method, 'RoseTTA fold', based on DeepMind's Alphafold2 framework, to predict 3-dimensional protein structures from 1-dimensional sequence information and generate models of protein–protein complexes with high accuracy.
Two-Dimensional Porous Micro/Nano Metal Oxides Templated by Graphene Oxide (2015)

Novel two-dimensional (2D) porous metal oxides with micro-/nanoarchitecture have been successfully fabricated using graphene oxide (GO) as a typical sacrificial template. GO as a 2D template ensures that the growth and fusion of metal oxides nanoparticles is restricted in the 2D plane. A series of metal oxides (NiO, Fe2O3, Co3O4, Mn2O3, and NiFe2O4) with similar nanostructure were investigated using this simple method. Some of these special nanostructured materials, such as NiO, when being used as anode for lithium-ion batteries, can exhibit high specific capacity, good rate performance, and cycling stability. Importantly, this strategy of creating a 2D porous micro/nano architecture can be easily extended to controllably synthesize other binary/polynary metal oxides nanostructures for lithium-ion batteries or other applications.
For capillary electrophoresis (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFor capillary electrophoresisTimothy J. WardCite this: Anal. Chem. 1994, 66, 11, 632A–640APublication Date (Print):June 1, 1994Publication History Published online22 September 2008Published inissue 1 June 1994https://pubs.acs.org/doi/10.1021/ac00083a001https://doi.org/10.1021/ac00083a001research-articleACS PublicationsRequest reuse permissionsArticle Views241Altmetric-Citations63LEARN 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
A Simple Method for Preparation of Poly-mannuronate Using Poly-guluronate Lyase (1995)

A simple method for preparation of poly-mannuronate from alginate has been developed. By making the best use of the substrate specificity of a poly-guluronate lyase, we prepared a poly-mannuronate of which the properties were almost identical to those of the poly-mannuronate produced by Haug’s acid hydrolysis method. Our method is very useful in terms of time and labor saving.
Average Spreading Parameter on Heterogeneous Surfaces (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAverage Spreading Parameter on Heterogeneous SurfacesClaire Andrieu, Cecile Sykes, and Francoise BrochardCite this: Langmuir 1994, 10, 7, 2077–2080Publication Date (Print):July 1, 1994Publication History Published online1 May 2002Published inissue 1 July 1994https://pubs.acs.org/doi/10.1021/la00019a010https://doi.org/10.1021/la00019a010research-articleACS PublicationsRequest reuse permissionsArticle Views958Altmetric-Citations135LEARN 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
Strategy for typing human papillomaviruses by RFLP analysis of PCR products and subsequent hybridization with a generic probe. (1995)

Genital human papillomaviruses (HPV) were detected by PCR using L1 consensus primers MY09 and MY11. To determine the underlying HPV type(s). PCR products were subsequently analyzed employing a combination of restriction fragment length polymorphism (RFLP) and hybridization with a generic oligonucleotide probe that binds to a conserved region located close to the MY11-binding site within the PCR products. Using computer-assisted sequence analysis, the lengths of the corresponding BamHI, DdeI, HaeIII, HinfI and PstI restriction fragments hybridizing with the generic probe were calculated, revealing distinct patterns for each of the 45 mucosal HPV types. This method is superior to RFLP analysis since it is not impaired by large amounts of restriction fragments resulting from nonspecific PCR products. Moreover, considering clinical specimens containing two or three different HPV types, direct sequencing of PCR products will be inconclusive, and the increased number of restriction fragments will complicate interpretation of RFLP patterns. Subsequent hybridization with the generic probe, however, results in the appearance of, at most, 2 or 3 bands per restriction enzyme digest and thus facilitates identification of the underlying HPV types.