bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pyrethroid insecticide concentrations and toxicity in streambed sediments and loads in surface waters of the San Joaquin Valley, California, USA
Authors: Domagalski Joseph L. , Weston Donald P. , Zhang Minghua , Hladik Michelle 
Published: February 2010

Abstract
Pyrethroid insecticide use in California, USA, is growing, and there is a need to understand the fate of these compounds in the environment. Concentrations and toxicity were assessed in streambed sediment of the San Joaquin Valley of California, one of the most productive agricultural regions of the United States. Concentrations were also measured in the suspended sediment associated with irrigation or storm-water runoff, and mass loads during storms were calculated. Western valley streambed sediments were frequently toxic to the amphipod, Hyalella azteca, with most of the toxicity attributable to bifenthrin and cyhalothrin. Up to 100% mortality was observed in some locations with concentrations of some pyrethroids up to 20 ng/g. The western San Joaquin Valley streams are mostly small watersheds with clay soils, and sediment-laden irrigation runoff transports pyrethroid insecticides throughout the growing season. In contrast, eastern tributaries and the San Joaquin River had low bed sediment concentrations (&lt;1 ng/g) and little or no toxicity because of the preponderance of sandy soils and sediments. Bifenthrin, cyhalothrin, and permethrin were the most frequently detected pyrethroids in irrigation and storm water runoff. Esfenvalerate, fenpropathrin, and resmethrin were also detected. All sampled streams contributed to the insecticide load of the San Joaquin River during storms, but some compounds detected in the smaller creeks were not detected in the San Joaquin River. The two smallest streams, Ingram and Hospital Creeks, which had high sediment toxicity during the irrigation season, accounted for less than 5% of the total discharge of the San Joaquin River during storm conditions, and as a result their contribution to the pyrethroid mass load of the larger river was minimal. Environ. Toxicol. Chem. 2010;29:813–823. © 2010 SETAC
Assessment of estrogenic activity conducted by combining bioassay and chemical analyses of the effluent from wastewater treatment plants in Nanjing, China
Authors: Lu Guanghua , Zhang Haizhen , Wang Chao 
Published: February 2010

AbstractThe estrogenic activity of the effluent from three municipal wastewater treatment plants (WWTPs) in Nanjing, China, was investigated. The water samples were enriched by solid-phase extraction and then eluted with different polar solvents, which gave 11 fractionated extracts. Chemical analysis and a vitellogenin (Vtg) assay in goldfish (Carassias auratus) were then utilized to evaluate the estrogenic activities 7 d after a single injection of the effluent extracts of WWTPs and to identify causative agents that led to the induction of Vtg in male fish. The results reveal that Vtg induction occurred primarily in response to the 75 to 90% methanol extracts, and different concentrations of the natural estrogens estrone (E1) and 17β-estradiol (E2) were detected in these extracts. As the Vtg induction increased, the plasma E2 levels increased, and a correlation between Vtg and E2 does exist. Furthermore, the gonadal somatic index (GSI) did not decrease significantly (p &gt; 0.05) when the Vtg concentrations were elevated after 7 d. Different concentrations of estrogens were detected in the effluents, which demonstrated that the current treatment processes employed by the three WWTPs could not fully remove these compounds. As a result, the aquatic organisms in the receiving water (Yangtze River) were at a risk of feminization. Environ. Toxicol. Chem. 2010;29:1279–1286. © 2010 SETAC
[3H]4‐(dimethylamino)‐N‐(4‐(4‐(2‐methoxyphenyl)piperazin‐1‐yl) butyl)benzamide: A selective radioligand for dopamine D3receptors. II. Quantitative analysis of dopamine D3and D2receptor density ratio in the caudate‐putamen
Authors: Xu Jinbin , Hassanzadeh Babak , Chu Wenhua , Tu Zhude , Jones Lynne A. , Luedtke Robert R. , Perlmutter Joel S. , Mintun Mark A. , Mach Robert H. 
Published: February 2010

Abstract4‐(Dimethylamino)‐N‐(4‐(4‐(2‐methoxyphenyl)piperazin‐1‐yl)butyl)benzamide (WC‐10), aN‐phenyl piperazine analog, displays high affinity and moderate selectivity for dopamine D3receptors versus dopamine D2receptors (Chu et al. [2005] Bioorg Med Chem 13:77–87). In this study, WC‐10 was radiolabeled with tritium (specific activity = 80 Ci/mmol), and quantitative autoradiography studies were conducted using rhesus monkey and Sprague‐Dawley rat brain sections.Kdvalues for the binding of [3H]WC‐10 to D3receptors obtained from quantitative autoradiography with rhesus monkey and rat brain sections are in agreement withKdvalues obtained from cloned human and rat receptors (Xu et al. [2009] Synapse 63:717‐728). The D2selective antagonist [3H]raclopride binds with 11‐fold higher affinity to human HEK D2L(Kd= 1.6 nM) than HEK D3(Kd= 18 nM) receptors; [3H]raclopride binds to rat Sf9 rD2Lreceptors with aKdof 6.79 nM, a value that is 4‐fold lower than binding to human HEK D2Lreceptors and 2.5‐fold higher than binding to rat Sf9 rD3receptors. In vitro quantitative autoradiography studies with [3H]WC‐10 and [3H]raclopride were conducted on adult rat and rhesus monkey brain sections. A mathematical model for calculating the absolute densities of dopamine D2and D3receptors based on the in vitro receptor binding data of [3H]WC‐10 and [3H]raclopride was developed. Synapse 64:449–459, 2010. © 2010 Wiley‐Liss, Inc.
Expression of the NR2B‐NMDA receptor subunit and its Tbr‐1/CINAP regulatory proteins in postmortem brain suggest altered receptor processing in schizophrenia
Authors: Kristiansen Lars V. , Patel Sagar A. , Haroutunian Vahram , Meador‐Woodruff James H. 
Published: February 2010

AbstractSeveral lines of evidence implicate aberrant glutamate neurotransmission in the pathophysiology of schizophrenia. In particular, compromised signaling through the N‐methyl‐D‐aspartate (NMDA) receptor has been linked to positive, negative, and cognitive symptoms of this illness. Studies in postmortem brain have identified altered expression of several structural and signaling molecules of the postsynaptic density (PSD), including the abundantly expressed protein PSD‐95, which binds directly to NR2 subunits of the NMDA receptor and regulates its trafficking, membrane expression, and downstream signaling. Several mechanisms for functional regulation of the NR2B‐containing NMDA receptor, which have been linked to cognitive dysfunction in schizophrenia, are well known. To analyze whether early events in NR2B processing are affected in schizophrenia, we have isolated a subcellular endoplasmic reticulum (ER)‐enriched fraction from postmortem brain and analyzed expression of the NR1 and NR2B NMDA receptor subunits as well as PSD‐95 in two areas of prefrontal cortex. We found significantly decreased ER expression of NR2B and PSD‐95 in dorsolateral prefrontal cortex in schizophrenia. Analysis in total‐cell homogenates from the same subjects of NR2B and PSD‐95 expression, as well as of the CINAP and Tbr‐1 transcription regulatory proteins, indicate that changes in NR2B processing in schizophrenia involve increased ER exit of NR2B containing NMDA receptors. Synapse 64:495–502, 2010. © 2010 Wiley‐Liss, Inc.
Surface Activity, Thermodynamics of Micellization and Adsorption Properties of Quaternary Salts Based on Ethanolamines and Decyl Bromide
Authors: Asadov Ziyafaddin H. , Rahimov Ravan A. , Nasibova Shafiga M. , Ahmadova Gulnara A. 
Published: February 2010

AbstractThe surface‐active properties of ionic‐liquid type salts synthesized by the interaction of ethanolamines and decyl bromide have been studied. Surface tension as a function of concentration of the surfactant in aqueous solution was measured at 10, 20, 30 and 40 °C using a drop volume stalagmometer. From these measurements, the maximum surface excess concentration and the minimum area per molecule at the aqueous solution/air interface, the critical micelle concentration (CMC), the surface pressure at the CMC, and the standard thermodynamic parameters of adsorption and micellization were calculated. The structural effects on adsorption, micellization, and the effectiveness of surface tension reduction are discussed in terms of these parameters.
Greater trochanteric preserving hip arthroplasty in the treatment of infantile septic arthritis: Long-term results
Authors: Abrishami Saeid , Karami Mohsen , Karimi Amin , Soufali Amir Payman , Aslani Hamid Reza , Badizadeh Kamran 
Published: February 2010

Background Balanced forces around the hip joint are critical for normal development of the hip joint, so it should be considered in every hip reconstructive procedure. Methods In seven children with complete destruction of the femoral head and neck due to septic arthritis, a reconstructive hip surgery was done to reconstruct the femoral head without sacrificing the greater trochanter and its muscles completely. The technique consists of a modified greater trochanter arthroplasty with only a medial portion of the greater trochanter and a varus femoral osteotomy. Results The average age of the children at surgery was 17 months (range 8–36 months) and the patients were followed for an average of 16.6 years (range 10.9–20.1 years). The average number of second operative procedures for each patient was 2 (range 1–4). The follow-up evaluation for each patient included documentation of pain, hip range of motion, and assessment of gait. In addition, the current leg-length discrepancy, final coverage and stability of the hip joint were documented. At final evaluation, all patients had a pain-free stable hip and two patients had near-normal hip range of motion. All patients have had satisfactory surgery results. Conclusions By this kind of hip reconstruction, we could provide a stable painless hip joint with special attention to the greater trochanter's role on hip biomechanics.
Supplier innovativeness, organizational learning styles and manufacturer performance: An empirical assessment
Authors: Azadegan Arash , Dooley Kevin J. 
Published: February 2010

AbstractSuppliers have become an increasingly important source of product and process innovation. While case studies have documented how supplier innovation can benefit a manufacturer, this relationship has not been empirically validated, nor have contingencies been explored. Using organizational learning theory we posit that the link between supplier innovativeness and manufacturer performance is moderated by the “fit” between the learning styles of the manufacturer and supplier. We empirically test our hypotheses using hierarchical linear modeling of survey responses from 148 manufacturers concerning 592 suppliers. Results indicate that supplier innovativeness has positive impacts on multiple dimensions of manufacturer performance. Results show that when the outsourced activity involves low levels of design responsibility by the supplier, it is more beneficial for the two partners to have contrasting learning styles. However, when the outsourced activity is design‐intensive, it is more beneficial to have a supplier with an explorative learning style.
Are cell salvage and autologous blood transfusion safe in endonasal surgery?
Authors: Anderson Shane , Panizza Ben 
Published: February 2010

Objective: Endoscopic transnasal approaches to the skull base and intracranial disease are an emerging subspecialty. The limits of this approach are often dictated by exposure and blood loss. Cell salvage techniques are widely used in other surgical fields. However, in otolaryngology, questions remain regarding its safety because work is performed in a contaminated field. In this literature review, we present the evidence for perioperative cell saver blood transfusion in potentially contaminated fields and the need for further investigation of its use in endonasal surgery.Data Sources: MEDLINE and Evidence Based Medicine Reviews databases were searched for relevant articles.Review Methods: All English articles discussing autologous blood transfusion in endonasal surgery were reviewed.Results: Despite a wide search pattern, no articles that discuss this topic were found in the English literature. Therefore, we went on to present data on the general use of cell saver blood in contaminated fields.Conclusion: Cell saver blood is widely accepted in surgery. It offers many advantages in elective operations in which blood loss is expected to be significant. Cell saver blood has been transfused from contaminated fields in other forms of surgery without an associated increase in morbidity. There is good evidence that antibiotic prophylaxis is mandatory in this setting. There is no direct evidence that cell salvage blood is safe in endonasal surgery. Cell salvage is part of a multimodality approach, including the use of hypotensive anesthesia, topical procoagulants, a dedicated team with appropriate equipment, and a good surgical technique with a focus on hemostasis.
Local mineral equilibrium in metamorphism: development of D. Korzhinskii’s ideas (on 110th anniversary of D.S. Korzhinskii)
Authors: Reverdatto V.V. 
Published: February 2010

Abstract
In 1950, D. Korzhinskii hypothesized that minerals in metamorphic reactions can be in local equilibrium. Proceeding from this idea, G. Fisher and R. Joesten later developed a realistic model of metamorphism kinetics. The model included diffusive mass transport in intergranular fluid controlled by the concentrations of components and chemical potential gradients, local-equilibrium reactions between minerals and pore fluid, mass balance of components, etc. The Korzhinskii–Fisher–Joesten model can provide clues to the duration of metamorphic events as inferred from mineral chemistry, free energy of phases, and rock textures and structures. The respective modeling of metamorphic reactions, with regard to spatial distribution of mineral grains, has implications for the transport and balance of chemical components. The balance of components (except volatiles) is restricted to domains of hundredth fractions of a cubic millimeter to several cubic meters. This may be the minimum size of an elementary domain in which minerals are in local equilibrium.
Regularities in the impurity element content of minerals during hydrothermal ore formation
Authors: Samusikov V.P. 
Published: February 2010

Abstract
Many goldfields host scores of discovered gold ore occurrences with unclear prospects because of their insufficient geologic exploration. Since exploration is expensive, the occurrences should be first appraised by low-cost methods. Studying the typomorphic features of minerals from the goldfields of the Upper Yana–Kolyma region, we have established a relationship between the contents of isomorphic impurity elements (IIE) and the degree of solution supersaturation (DSS). Preliminary studies show that, based on this relationship, criteria can be developed for revealing “concealed” mineralogical–geochemical zonation and predicting mineralization to depth. The determining factor for the behavior of IIE, depending on the DSS, is their distribution coefficient (K) with respect to the host element. If K &gt; 1, the content of these elements decreases with increasing DSS during ore deposition; if K &lt; 1, it increases. When a solution contains IIE with K &gt; 1 and K &lt; 1, they behave according to their distribution coefficients. In other words, when the DSS increases during ore deposition, IIE with K &gt; 1 will be typical of early mineral segregations, and IIE with K &lt; 1, of late ones. If the crystallization front migrates, this must give rise to a vertical zonation in the content of both groups of elements. The content of elements with K &gt; 1 will decrease upsection, and that of elements with K &lt; 1 will increase (“concealed” mineralogical–geochemical zonation). In connection with this subject, the paper reports data using native gold as an example. The behavior of Ag, Sb, Hg, Cu, Ni, and Co is discussed depending on the depth of deposit formation from the paleosurface (deep-seated → shallow); in the vertical section of individual deposits; depending on mineralization stages; in the cross-section of individual crystals with a zonal structure. The behavior of Ag, Sb, and Hg has been shown to be opposite to that of Cu, Ni, and Co in all these aspects. With respect to Au, the first group of elements has K &lt; 1, and the second one, K &gt; 1. Copper and antimony are of particular interest. In the vertical section of individual deposits, the Cu content of gold increases with depth and the Sb content decreases. The Cu/Sb ratio can be used to estimate the erosional truncation level of deposits and thus predict their extension to depth. Examples of well-explored deposits are given.
Kerogen from the Cambrian deposits of the Kuonamka Formation (northeastern Siberian Platform)
Authors: Parfenova T.M. , Kontorovich A.E. , Borisova L.S. , Melenevskii V.N. 
Published: February 2010

Abstract
Kerogens from the Lower and Middle Cambrian deposits of the Kuonamka Formation in the northeastern Siberian Platform have been analyzed by modern methods. We have determined the pyrolytic characteristics of insoluble organic matter and the contents of C, H, S, N, O, and the stable C isotope. The type and catagenesis of organic matter have been estimated, as well as the generating potential of oil source rocks. It has been found that the composition of kerogens taken from the Molodo River outcrops was affected by supergene processes and that the degree of their alteration is related to the organic content of rocks and their structure.
The regularities in the structural group composition of high-molecular heteroatomic petroleum components
Authors: Golovko A.K. , Gorbunova L.V. , Kam’yanov V.F. 
Published: February 2010

Abstract
We generalized experimental data on the structural group composition and macrostructural characteristics of high-molecular compounds (HMCs)—hydrocarbons, resins, and asphaltenes—from more than 180 crude oil samples extracted from different oil fields of Eurasia. Most of oil resin molecules contain 1–3 structural blocks, each consisting of 0–3 aromatic and 0–5 naphthenic rings in different combinations, with the total number of rings in each block not exceeding 5–6. The average molecular weights of resins are no more than 100–1500 a.m.u. Asphaltenes differ from resins from the same source in the larger number of structural blocks (mainly tri- or tetracyclic aromatic) in molecule (up to five), lower degrees of substitution of aromatic cores, and smaller portions of carbon atoms in saturated fragments. The average molecular weights of asphaltenes measured by naphthalene cryoscopy do not exceed 2500 a.m.u. Owing to intermolecular interactions, HMCs form various associates and polymolecular particles, including quasi-crystalline “batches” and multibatch aggregates. Spontaneous disintegration and formation of such particles make the oils dynamically equilibrium polydisperse systems. We have developed the main regularities of compositional and structural changes of HMCs depending on the depth of occurrence, age, and lithologic composition of oil-bearing deposits. Being chemically labile heteroatomic substances, petroleum HMCs are more rapidly subjected to compositional and structural transformations than hydrocarbons, i.e., are more responsive to changes in strata conditions.
Naphthene-aromatic hydrocarbons in oils of different genesis
Authors: Pevneva G.S. , Voronetskaya N.G. , Golovko Yu.A. , Golovko A.K. 
Published: February 2010

Abstract
Naphthene-benzenes, naphthene-naphthalenes, and naphthene-phenantrenes have been extracted with methanol from mono-, bi-, and triarene fractions of oils of different genetic types from the West Siberian, Timan–Pechora, North Caucasian, and Pannonian (Serbia) oil-and-gas-bearing basins. The hydrocarbon composition and molecular-mass distribution (MMD) of naphthene-arenes have been determined by mass spectrometry. Naphthene-benzene and naphthene-naphthalene molecules contain one to six naphthenic cycles, whereas naphthene-phenantrene molecules contain one to three naphthenic rings. The number of carbon atoms in the alkyl groups of naphthene-benzenes, naphthene-naphthalenes, and naphthene-phenantrenes reaches 38, 20, and 19, respectively. Distinctive features of group compositions and MMD of naphthene-arenes have been revealed in oils generated by different organic matter.
Effect of inclined conductivity anisotropy on frequency induction and TEM data
Authors: Epov M.I. , Antonov E.Yu. , Fedorov A.I. 
Published: February 2010

Abstract
The harmonic electromagnetic field of a vertical magnetic dipole above an anisotropic half-space has been simulated using a forward algorithm for layered conductive media with inclined anisotropy. Inclined anisotropy has been found out to change the typical behavior of frequency and transient responses. Qualitative interpretation of FD loop–loop responses of a conducting earth with inclined anisotropy requires taking into account the receiver azimuth dependence of apparent resistivities. In the case of time-domain measurements, this dependence is absent but the apparent resistivities are higher at late times.
TEM-TDEM soundings with the use of vertical loops
Authors: Mogilatov V.S. , No A.Yu. 
Published: February 2010

Abstract
In the course of scientific collaboration, we were involved in discussion on the capacity of a vertical loop configuration to resolve thin high-resistivity layers, which is quite an interesting and largely debated point. We report a small forward modeling study including an algorithm based on an analytical solution by separation of variables and a respective program for computing the time-domain TEM field of a horizontal magnetic dipole. We infer that the subsurface vertical loop system shows no critical advantage in resolving thin insulating inclusions.
Nucleosomal Context of Binding Sites Influences Transcription Factor Binding Affinity and Gene Regulation
Authors: Dai Zhiming , Dai Xianhua , Xiang Qian , Feng Jihua 
Published: February 2010

Abstract
Transcription factor (TF) binding to its DNA target site plays an essential role in gene regulation. The location, orientation and spacing of transcription factor binding sites (TFBSs) also affect regulatory function of the TF. However, how nucleosomal context of TFBSs influences TF binding and subsequent gene regulation remains to be elucidated. Using genome-wide nucleosome positioning and TF binding data in budding yeast, we found that binding affinities of TFs to DNA tend to decrease with increasing nucleosome occupancy of the associated binding sites. We further demonstrated that nucleosomal context of binding sites is correlated with gene regulation of the corresponding TF. Nucleosome-depleted TFBSs are linked to high gene activity and low expression noise, whereas nucleosome-covered TFBSs are associated with low gene activity and high expression noise. Moreover, nucleosome-covered TFBSs tend to disrupt coexpression of the corresponding TF target genes. We conclude that nucleosomal context of binding sites influences TF binding affinity, subsequently affecting the regulation of TFs on their target genes. This emphasizes the need to include nucleosomal context of TFBSs in modeling gene regulation.