bluuebunny/crossref_metadata_2025_split huggingface dataset:
Resource dilemmas with environmental uncertainty and asymmetric players
Authors: Budescu David V. , Rapoport Amnon , Suleiman Ramzi 
Published: July 2012

AbstractGroups of subjects participated in a series of 30 noncooperative independent single‐trial resource dilemmas. On each trial the subjects in each group requested privately a number of points from a common pool. Individual requests were granted if and only if the total group request was equal to or smaller than the pool size. The pool size on each trial was sampled randomly from a uniform distribution that was common knowledge. Asymmetry in payoff was induced by assigning to each group member a different points‐to‐money exchange rate. The results show that as the uncertainty about the pool size increases subjects (1) overestimate the pool size, (2) increase their requests, and (3) expect others to increase their requests. In addition (4) individual requests and expectations regarding others' requests are inversely related to the exchange rates, reflecting attempts to equate payoffs across group members.
Factor Structure and Item Analysis of the Yale Food Addiction Scale in Obese Candidates for Bariatric Surgery
Authors: Meule Adrian , Heckel Daniela , Kübler Andrea 
Published: July 2012

AbstractConverging research suggests phenomenological and neurobiological similarities between excessive food consumption and addictive behaviour in substance dependence. Recently, the Yale Food Addiction Scale (YFAS) has been proposed for the assessment of addictive eating behaviour. The German version of the YFAS was administered to obese individuals seeking bariatric surgery (N = 96). Factor structure, internal consistency, and item statistics were analysed. Forty participants (41.70%) received a food addiction diagnosis. The one‐factorial structure of the YFAS, which has been found in non‐clinical samples, could be confirmed. All but three items had factor loadings >.50. Internal consistency was α = .82. Item analysis revealed that items related to unsuccessful attempts to cut down and consumption despite physical and emotional problems were endorsed by the majority of participants. Findings support the use of the YFAS in clinical populations, while applicability of some items differs between clinical and non‐clinical samples. Copyright © 2012 John Wiley & Sons, Ltd and Eating Disorders Association.
Toxicity and bioaccumulation of biosolids-borne triclosan in food crops
Authors: Pannu Manmeet W. , Toor Gurpal S. , O'Connor George A. , Wilson Patrick C. 
Published: July 2012

Abstract
Triclosan (TCS) is an antimicrobial compound commonly found in biosolids. Thus, plants grown in biosolids-amended soil may be exposed to TCS. We evaluated the plant toxicity and accumulation potential of biosolids-borne TCS in two vegetables (lettuce and radish) and a pasture grass (bahia grass). Vegetables were grown in growth chambers and grass in a greenhouse. Biosolids-amended soil had TCS concentrations of 0.99, 5.9, and 11 mg/kg amended soil. These TCS concentrations represent typical biosolids containing concentrations of 16 mg TCS/kg applied at agronomic rates for 6 to 70 consecutive years, assuming no TCS loss. Plant yields (dry wt) were not reduced at any TCS concentration and the no observed effect concentration was 11 mg TCS/kg soil for all plants. Significantly greater TCS accumulated in the below-ground biomass than in the above-ground biomass. The average bioaccumulation factors (BAFs) were 0.43 ± 0.38 in radish root, 0.04 ± 0.04 in lettuce leaves, 0.004 ± 0.002 in radish leaves, and &lt;0.001 in bahia grass. Soybean (grain) and corn (leaves) grown in our previous field study where soil TCS concentrations were lower (0.04–0.1 mg/kg) had BAF values of 0.06 to 0.16. Based on the data, we suggest a conservative first approximate BAF value of 0.4 for risk assessment in plants. Environ. Toxicol. Chem. 2012; 31: 2130–2137. © 2012 SETAC
p-nitrophenol toxicity to and its removal by three select soil isolates of microalgae: The role of antioxidants
Authors: Subashchandrabose Suresh R. , Megharaj Mallavarapu , Venkateswarlu Kadiyala , Naidu Ravi 
Published: July 2012

Abstract
The nontarget effects, in terms of biochemical changes induced by p-nitrophenol (PNP) in three soil microalgae, Chlorella sp., Chlorococcum sp., and Heterochlamydomonas sp., and the PNP removal efficiency of these isolates, were determined. On exposure to 20 mg L−1 PNP, Chlorella sp. showed greater activity of peroxidase, superoxide dismutase, and glutathione reductase as well as high contents of proline and carotenoids. While Heterochlamydomonas sp. exhibited higher levels of catalase and protein, Chlorococcum sp. produced greater amounts of malondialdehyde, a measure of lipid peroxidation, in the presence of PNP. Chlorella sp. tolerated PNP by producing large quantities of antioxidants coupled with less lipid peroxidation, while Chlorococcum sp. was susceptible, as evidenced by low antioxidant production and high lipid peroxidation. During 7-d exposure, Chlorella sp., Heterochlamydomonas sp., and Chlorococcum sp. were able to remove 39, 18, and 4% of 20 mg L−1 PNP, respectively. The present results indicate that proline, carotenoids and malondialdehyde are the potential biomarkers for assessing PNP toxicity toward microalgae, and their response could be considered for differentiating tolerant and susceptible strains. Moreover, there is a clear correlation between PNP removal and antioxidant synthesis in microalgae on exposure to the pollutant. Environ. Toxicol. Chem. 2012; 31: 1980–1988. © 2012 SETAC
Understanding the atmospheric measurement and behavior of perfluorooctanoic acid
Authors: Webster Eva M. , Ellis David A. 
Published: July 2012

Abstract
The recently reported quantification of the atmospheric sampling artifact for perfluorooctanoic acid (PFOA) was applied to existing gas and particle concentration measurements. Specifically, gas phase concentrations were increased by a factor of 3.5 and particle-bound concentrations by a factor of 0.1. The correlation constants in two particle–gas partition coefficient (KQA) estimation equations were determined for multiple studies with and without correcting for the sampling artifact. Correction for the sampling artifact gave correlation constants with improved agreement to those reported for other neutral organic contaminants, thus supporting the application of the suggested correction factors for perfluorinated carboxylic acids. Applying the corrected correlation constant to a recent multimedia modeling study improved model agreement with corrected, reported, atmospheric concentrations. This work confirms that there is sufficient partitioning to the gas phase to support the long-range atmospheric transport of PFOA. Environ. Toxicol. Chem. 2012; 31: 2041–2046. © 2012 SETAC
Physiological effect of anatase TiO2 nanoparticles on Lemna minor
Authors: Song Guanling , Gao Yuan , Wu Hao , Hou Wenhua , Zhang Chunyang , Ma Huiquan 
Published: July 2012

Abstract
Manufactured metal oxide nanoparticles (NPs) are being used on a large scale, and these particles will inevitably reach a body of water through wastewater and urban runoff. The ecotoxicological study of these NPs on hydrophyte is limited at present. Lemna minor was exposed to media with different concentrations of titanium dioxide (TiO2) NPs or bulk TiO2 for 7 d. The changes in plant growth, chlorophyll, antioxidant defense enzymes (peroxidase [POD], catalase [CAT], and superoxide dismutase [SOD] activities), and malondialdehyde (MDA) content were measured in the present study. The particle size of TiO2 NPs and the zeta potential of TiO2 NPs and of bulk TiO2 in the culture media were also analyzed to complementally study the toxicity of these materials on duckweed. The results showed that the effect of TiO2 NPs on plant growth was more obvious than bulk TiO2. Titanium dioxide NPs stimulated plant growth in low concentrations, but inhibited plant growth at high concentrations. The POD, SOD, and CAT activity of Lemna minor increased when TiO2 NP concentration was lower than 200 mg/L to eliminate accumulated reactive oxygen species in plant cells. The SOD activity decreased when the TiO2 NP concentration was higher than 200 mg/L, and the plant cell membrane encountered serious damage from 500 mg/L TiO2 NP concentration in the culture media. Environ. Toxicol. Chem. 2012; 31: 2147–2152. © 2012 SETAC
Binding interactions of 1-naphthol with dissolved organic matter of Lake Biwa and treated sewage wastewater: The role of microbial fulvic acid
Authors: Ahmed Tanveer , Ohta Keiichi , Nagafuchi Osamu , Maruo Masahiro 
Published: July 2012

Abstract
The binding interactions of 1-naphthol with effluent and whole natural dissolved organic matter (DOM) samples were analyzed by using a fluorescence quenching technique. Nonfractionated DOM samples from Lake Biwa (Japan), creek water, treated sewage effluents, and an extracted Lake Biwa fulvic acid (LBFA) standard were used as quenchers and compared at the same 1-naphthol with DOM organic carbon ratios found for low natural dissolved organic carbon (DOC) levels (∼4.5 mg/L). Natural and effluent DOM (eDOM) samples were characterized by the DOC level, relative hydrophobicity (RH%), ultraviolet (UV)-visible absorbance and fluorescence excitation emission spectroscopy. These parameters were compared with those of the reference LBFA standard. Concave-up Stern-Volmer plots accounted for both the partitioning and the adsorptive binding in the eDOM–polycyclic aromatic hydrocarbons (PAH) system as compared with the nonspecific partitioning in the natural DOM-PAH system. Strong linear regressions (r2 &gt; 0.80) between the log KDOC values, the RH%, the UV absorbances, and the Fl340-435-UV340 indices for the structural composition and molecular weights of the DOM samples were obtained. These results suggest that low molecular weight microbial fulvic acid (&lt;800 Da) is dominant in the eDOM-PAH binding interactions, as well as in the distinct molecular structure of the eDOM samples, which resulted in fivefold to sixfold higher binding magnitude for 1-naphthol than for the other samples. Environ. Toxicol. Chem. 2012; 31: 2201–2209. © 2012 SETAC
Gasemissionen, gelesen wie Hieroglyphen
Authors: Bobrowski Nicole 
Published: July 2012

AbstractVulkanforschung: Wer wissen will, was im Erdinneren geschieht, muss meist mit aufwendiger Technik in direkter Kraternähe arbeiten. Jetzt zeigen internationale Messkampagnen, dass auch mit einfacheren Instrumenten und aus größerer Entfernung viel zu erreichen ist.
Local production of serum amyloid a is implicated in the induction of macrophage chemoattractants in Schwann cells during wallerian degeneration of peripheral nerves
Authors: Jang So Young , Shin Yoon Kyung , Lee Ha Young , Park Joo Youn , Suh Duk Joon , Kim Jong Kuk , Bae Yoe‐Sik , Park Hwan Tae 
Published: July 2012

AbstractThe elevation of serum levels of serum amyloid A (SAA) has been regarded as an acute reactive response following inflammation and various types of injuries. SAA from the liver and extrahepatic tissues plays an immunomodulatory role in a variety of pathophysiological conditions. Inflammatory cytokines in the peripheral nerves have been implicated in the Wallerian degeneration of peripheral nerves after injury and in certain types of inflammatory neuropathies. In the present study, we found that a sciatic nerve axotomy could induce an increase of SAA1 and SAA3 mRNA expression in sciatic nerves. Immunohistochemical staining showed that Schwann cells are the primary sources of SAA production after nerve injury. In addition, interleukin‐6‐null mice, but not tumor necrosis factor‐α‐null mice showed a defect in the production of SAA1 in sciatic nerve following injury. Dexamethasone treatment enhanced the expression and secretion of SAA1 and SAA3 in sciatic nerve explants cultures, suggesting that interleukin‐6 and corticosteroids might be major regulators for SAA production in Schwann cells following injury. Moreover, the stimulation of Schwann cells with SAA1 elicited the production of the macrophage chemoattractants, Ccl2 and Ccl3, in part through a G‐protein coupled receptor. Our findings suggest that locally produced SAA might play an important role in Wallerian degeneration after peripheral nerve injury. © 2012 Wiley Periodicals, Inc.
CANCELLED PROCEDURES: INEQUALITY, INEQUITY AND THE NATIONAL HEALTH SERVICE REFORMS
Authors: Cookson Graham , Jones Simon , McIntosh Bryan 
Published: July 2012

SUMMARYUsing data for every elective procedure in 2007 in the English National Health Service, we found evidence of socioeconomic inequality in the probability of having a procedure cancelled after admission while controlling for a range of patient and provider characteristics. Whether this disparity is inequitable is inconclusive. Copyright © 2012 John Wiley & Sons, Ltd.
Environmental and land use factors affecting phosphate hysteresis patterns of stream water during flood events (Carpathian Foothills, Poland)
Authors: Siwek Janusz , Siwek Joanna P. , Żelazny Mirosław 
Published: July 2012

AbstractFlood events play a substantial role in the circulation of catchment phosphate (PO43−). The purpose of the research was to analyze the factors determining PO43− hysteresis patterns (direction and width) during four types of floods: short and long rainfall floods and snowmelt floods on frozen and thawed soil. The research took place in small catchments (forested, agricultural, mixed‐use) in the Carpathian Foothills in Poland. Anticlockwise hysteresis was identified in the forested catchment during short and long rainfall floods. Under the same conditions, the clockwise direction was observed in the agricultural catchment. In the mixed‐use catchment, the direction of PO43− hysteresis loops was various, driven by the share of water flowing from each part of the catchment. For snowmelt floods, the PO43− hysteresis pattern was similar in all the streams studied (usually clockwise). The direction of PO43− hysteresis loops depends on water circulation patterns, which are determined by the different influx times of particular runoff components. The stream recharge mechanism during a flood event is affected both by the factor initiating the event (precipitation, snowmelt) as well as by land use in the given catchment. Hysteresis loop width was determined by the pool of PO43− in a given catchment during the time period immediately preceding a flood event as well as by the quantity of PO43− flushed out of the soil. The greater a catchment's pool of PO43− and the greater its ability to flush PO43− out of the soil and into surface flow, the wider the hysteresis loops. Copyright © 2012 John Wiley & Sons, Ltd.
Reference evapotranspiration trends and their sensitivity to climatic change on the Tibetan Plateau (1970–2009)
Authors: Xie Hong , Zhu Xuan 
Published: July 2012

AbstractEvapotranspiration is an important component of the water and energy balance. It is dependent on climate. Precipitation, solar radiation, temperature, humidity, and wind all contribute to the rate of evapotranspiration. In this study, the temporal trends of reference evapotranspiration (ETref) and four main ETref drivers, namely, mean air temperature (Ta), wind speed (u2), net radiation (Rn) and actual vapour pressure (ea) from 1970 to 2009, were calculated based on 75 meteorological stations on the Tibetan Plateau. The results showed that the ETref on the Tibetan Plateau decreased on average by 0.6909 mm a‐1a‐1 from 1970 to 2009. Ta and ea showed an increasing trend, whereas u2 and Rn exhibited a decreasing trend. To explore the underlying causes of the ETref variation, an attribution analysis was performed to quantify the contribution of Ta, u2, Rn and ea, which showed that the changes in u2, Rn and ea produced the negative effect, whereas Ta produced the positive effect on ETref rates. The changes in u2 were found to produce the largest decrease (−0.7 mm) in ETref, followed by ea (−0.4 mm) and Rn (−0.1 mm). Although the significant increase in Ta had a large positive effect (0.51 mm) on ETref rates, changes in the other three variables each reduced ETref rates, resulting in an overall negative trend in ETref. Copyright © 2012 John Wiley & Sons, Ltd.
Geraniol inhibits murine skin tumorigenesis by modulating COX‐2 expression, Ras‐ERK1/2 signaling pathway and apoptosis
Authors: Chaudhary Sandeep Chand , Siddiqui Mohammad Saeed , Athar Mohammad , Alam Mohammad Sarwar 
Published: July 2012

ABSTRACTGeraniol (GOH), a naturally occurring monoterpene, has been shown to have antiproliferative, cell cycle arrest and apoptosis‐inducing effects, and represents a promising cancer chemopreventive agent. In the present study, we investigated the chemopreventive potential of GOH (50 and 100 mg kg−1 body weight) against 7,12‐dimethylbenz[a]anthracene (DMBA)/12‐O‐tetradecanoylphorbol 13‐acetate (TPA)‐mediated skin tumorigenesis in Swiss albino mice. The topical treatment of GOH, 30 min prior to TPA (2 µg per 200 µl of acetone) treatment significantly inhibited TPA‐induced skin edema, hyperplasia, COX‐2 induction and oxidative stress response. The GOH treatment also resulted in reduction of TPA‐induced ornithine decarboxylase activity and [3H] thymidine incorporation by 53% (P < 0.001) and 41% (P < 0.001), respectively. We found that GOH treatment significantly inhibited the tumor incidence and number of tumors (P < 0.001) and extended the latency period from 4 weeks in DMBA/TPA treatment group to 10 weeks in GOH‐pretreated mice. Furthermore, we observed that GOH treatment significantly suppressed the Ras/Raf/ERK1/2 signaling pathway in skin tumor. Consistently, GOH‐treated skin tumors showed reduced expression of Bcl‐2 and increased expression of Bax in these lesions. Thus, it was concluded that GOH inhibits DMBA/TPA‐mediated skin tumorigenesis by attenuating the Ras proliferation pathway and inducing pro‐apoptotic state via inhibition of oxidative stress response and inflammation. Copyright © 2012 John Wiley & Sons, Ltd.
Short‐ and long‐term toxicities of multi‐walled carbon nanotubes in vivo and in vitro
Authors: Tang Shaoxian , Tang Yuechao , Zhong Lingling , Murat Kumuruz , Asan Gvlqikra , Yu Jerry , Jian Rongrong , Wang Changchun , Zhou Ping 
Published: July 2012

ABSTRACTAs nanomaterials are developed and applied, their potential for health hazards needs to be determined. In the present study, we used commercial nude multi‐walled carbon nanotubes (MWCNTs) trimmed to a short length (50–200 nm; s‐MWCNTs) and synthesized functionalized MWCNTs with polyethylene glycol (PEG) (s‐MWCNTs‐PEG). We then studied the toxic effects of s‐MWCNTs and s‐MWCNTs‐PEG on cultured cells and in a mouse model. Peripheral haemograms and various biochemical markers of the heart, liver and kidney were measured. We found no toxicity of either type of nanotube on the viability of human SKBR‐3 breast carcinoma cells or control cells. There were no differences in vivo on inflammatory responses, the coagulation system, haemograms or vital organ functions between the test and control groups. Additionally, we found no toxicity of these nanotubes on male mouse sperm production or mutagenesis in the long term. In conclusion, both s‐MWCNTs and s‐MWCNTs‐PEG displayed good in vitro and in vivo biocompatibility, making future applications in biology and clinical therapy as a carrier for drug delivery feasible. Copyright © 2012 John Wiley & Sons, Ltd.
Cadmium inhibits the ovary δ‐aminolevulinate dehydratase activity in vitro and ex vivo: protective role of seleno‐furanoside
Authors: Vargas Laura Musacchio , Soares Melina Bucco , Izaguirry Aryele Pinto , Lüdtke Diogo Seibert , Braga Hugo C. , Savegnago Lucielli , Wollenhaupt Suzi , Brum Daniela dos Santos , Leivas Fábio Gallas , Santos Francielli Weber 
Published: July 2012

ABSTRACTCadmium (Cd) toxicity is a concern to the tobacco‐smoking sub‐population which includes millions of people worldwide. Although this metal may cause severe damage to embryos and the reproductive organs, the precise mechanisms underlying its toxicity remain unclear. In the present study, the Cd effect on ovary δ‐aminolevulinate dehydratase (δ‐ALA‐D) activity was investigated in vitro and ex vivo. We observed that low concentrations of Cd inhibited cow ovary δ‐ALA‐D activity in vitro and the IC50 value obtained was 19.17 μM. Furthermore, the protective effect of a novel organic selenium compound (seleno‐furanoside) in restoring enzyme activity was evaluated. Seleno‐furanoside (10, 50, 100, 200, 400 and 1000 μM) did not reverse the Cd toxicity in bovine ovarian tissue in vitro. According to the in vitro reults, acute Cd exposure (2.5 and 5 mg kg–1) caused a significant inhibition in ovary δ‐ALA‐D activity in mice (around 27% and 34%, respectively). Therapy with seleno‐furanoside (100 µmol kg–1) was able to restore enzyme activity. Thus, we demonstrated for the first time that δ‐ALA‐D activity from ovary is inhibited by Cd both in vitro and ex vivo. Additionally, seleno‐furanoside therapy was effective in restoring ovarian enzyme activity inhibited by Cd exposure in mice, but it did not reverse the in vitro metal effect. This study detected a new toxicity marker of Cd toxicity on ovarian tissue as well as the beneficial effect of a new compound to manage the metal effect after acute exposure. Copyright © 2012 John Wiley & Sons, Ltd.
Clinical PhD Graduate Student Views of Their Scientist‐Practitioner Training
Authors: VanderVeen Joseph W. , Reddy L. Felice , Veilleux Jennifer C. , January Alicia M. , DiLillo David 
Published: July 2012

ObjectivesThe goal of the scientist‐practitioner (S‐P) training model is to produce clinical psychologists equipped to integrate and utilize both science and practice in the clinical and research domains. However, much has been written regarding the possible shortcomings of S‐P training and whether clinical psychology graduate students are actually gaining the knowledge and skills to integrate science and practice during graduate training and beyond (Chang, Lee, & Hargreaves, 2008; Gelso, 2006; Merlo, Collins, & Bernstein, 2008; Phillips, 1993).MethodsAs such, the present study assessed ratings of satisfaction, perception of ability, and use of the S‐P training model within 653 clinical psychology graduate students enrolled in programs that are members of the Council of University Directors of Clinical Psychology.ResultsFindings suggest that students are consistently trained in the integration of science and practice and have confidence in their abilities to apply the S‐P integration to research and clinical work. However, despite understanding the ways in which science can influence practice, over one third of students reported that they rarely use science‐based decisions when informing clients of the clinical services they will be providing.ConclusionsThe implications of these results support the need for a more detailed evaluation of clinical psychology graduate students as well as the use of research‐informed practice and the process of providing clients with information they need to make informed choices about treatment.