bluuebunny/crossref_metadata_2025_split huggingface dataset:
Climate change and agricultural pollution effects on the trophic status of a Mediterranean lake
Authors: Bertahas Ilias , Dimitriou Elias , Karaouzas Ioannis , Laschou Sofia , Zacharias Ierotheos 
Published: August 2006

AbstractTrichonis Lake is the largest natural freshwater body in Greece with a surface area of 97 km2. It receives pollutants from numerous anthropogenic activities, especially from intensive agricultural practices, urban sewages, stock grazing land and small industries. In this study, hydrologic and chemical parameters are assessed during two periods (1990–1991) and (2001–2002) to evaluate the effects of the climatic changes on phosphorous trends and consequently on the trophic status of Trichonis Lake. Even though large quantities of fertilizers are applied in the lake's catchment, phosphorus loads are still in the permissible level as estimated according to Vollenweider's relationship based on total phosphorus concentration. Due to relatively higher rainfall precipitation during the last years, an increased amount of the phosphorus entering into the lake system is flushed out, thus keeping the trophic status of the lake in oligotrophic levels. In contrast, lower rainfall rates during the first period (1990–1991) have led to the decrease in phosphorus flush out and its detainment into the lake water and sediment resulting to mesotrophic conditions. As the trophic status of the lake is mainly hydrologically dependent and thus unpredictable, effective management plans targeting the elimination of nutrient pollution loadings are necessary.
Nitrogen emissions into freshwater ecosystems: is there a need for nitrate elimination in all wastewater treatment plants?
Authors: Petzoldt Thomas , Uhlmann Dietrich 
Published: August 2006

AbstractExcessive inputs of phosphorus and nitrogen are the main reasons of eutrophication of inland waters and coastal areas. Large efforts have been made to control phosphorus, but the measures to reduce nitrogen emissions failed at least partly. While it was possible to reduce nitrogen emissions from industry and municipal wastewater treatment plants, diffuse sources are showing only very minor decline. Examples of limnetic, marine and coastal systems are given to review the current knowledge about nitrogen transformation and the effects of nitrate in the environment. When N is the limiting nutrient in a particular water body, this does not necessarily mean that phytoplankton is controllable by NO3– removal. In systems with problems due to a high redox‐sensitive internal phosphorus load and under certain constraints, nitrate may be used as an ecotechnological measure to prevent anaerobic phosphorus release from sediments. Model simulations are used to demonstrate this. A schematic model of redox‐mediated temporal phosphorus storage in riverine lake sediments with short retention time is proposed. We conclude that while anthropogenic nitrogen emissions are a global problem, no fast and simple single solution exists. Additional nitrogen removal in wastewater treatment will have no effect, as long as diffuse sources and nitrate concentrations in groundwater remain at a high level. Emission reductions should be achieved in an integrated way, taking direct and indirect effects into account. In this sense, case by case decisions and a new definition of “sensitive areas” are required.
Genetic link between Chaoshan and other Chinese Han populations: Evidence from HLA‐A and HLA‐B allele frequency distribution
Authors: Hu Sheng‐Ping , Luan Jian‐An , Li Biao , Chen Jing‐Xi , Cai Ke‐Li , Huang Li‐Qun , Xu Xiao‐Yan 
Published: August 2006

AbstractThe genetic polymorphism of HLA‐A and HLA‐B loci was investigated in 505 Chaoshanese using PCR‐SSP method. Among the HLA‐A alleles detected, A*11 (35.64%) was most frequent, followed by A*02 (31.78%). Of 34 HLA‐B alleles tested, 30 were observed, in which B*60 (21.68%), B*46 (14.46%), and B*58 (10.69%) were highly predominant. Comparison was made with other nine Chinese Han ethnic groups covering the Mainland China, Taiwan, Hong Kong, and Singapore. The high frequent alleles found in Chaoshanese were also common in other Chinese groups compared though the frequency levels varied from group to group. The phylogenic tree analysis based on the HLA‐A and ‐B allele frequencies of all the 10 Chinese ethnic groups revealed that Chaoshanese, while clustering in general with the southern China‐related Han Chinese, had the highest affinity to the Mainland Minnanese, but separated distinctively from the northern Han Chinese. The study, however, was yet to confirm the hypothesis of the Central Plains Han origin of Chaoshanese. Interestingly, the alleles (B*46, B*38, and B*58) and the related haplotypes (A*02‐B*46 and A*33‐B*58) that are positively associated with nasopharyngeal carcinoma (NPC), a disease prevailing predominantly among southern Chinese, were always at much higher frequencies among southern Chinese than among northern Chinese, whereas A*31 and B*13, the two alleles with highly protective effects for NPC, and the associated haplotype A*30‐B*13 were predominantly high in northern Chinese. The different genetic background between northern and southern China may explain, at least partially, the prevalence of NPC among southern Chinese. Am J Phys Anthropol, 2006. © 2006 Wiley‐Liss, Inc.
Cranial trauma in iron age Samnite agriculturists, Alfedena, Italy: Implications for biocultural and economic stress
Authors: Paine R. R. , Mancinelli D. , Ruggieri M. , Coppa A. 
Published: August 2006

AbstractThe Samnites are an Iron Age protohistoric people from the central region of Italy. The skeletal remains are from the Alfedena necropolis, 6th through 5th centuries B.C. Macchiarelli et al. (Antropologia Contemporanea 4 (1981) 239–243) were the first to report on cranial trauma for this population, presenting four cases with extreme injuries. We re‐examined this well documented skeletal population for additional examples of trauma. Previously unexamined remains from Alfedena, excavated at the turn of the 20th century, are also included in our analysis (Mariani. 1901. “Aufidena”, ricerche archeologiche e storiche del Sannio settentrionale. Roma: Acc Naz Dei Lincei). Of the 209 adult crania examined, 12.9% of them exhibited trauma. Analysis of location and frequency of cranial trauma revealed that cranial injuries to the head appear to originate from all directions. The high rate of cranial trauma underscores the violent circumstances experienced during the Iron Age protohistoric period of central Italy. Males are much more likely to exhibit cranial injury than females (P = 0.009). We conclude that the injuries received by Samnite male farmer‐warriors occurred while defending pastoral‐agricultural resources. Trauma rates are similar for some Iron Age populations and not for others. Behavior associated with violence during the Iron Age period can not be generalized for all populations found in Italy. Am J Phys Anthropol, 2006. © 2006 Wiley‐Liss, Inc.
Tragfähigkeit von schlanken Druckgliedern aus Beton und Mauerwerk
Authors: Sabha Ahmad 
Published: August 2006

AbstractTheoretischen Analysen der Tragfähigkeit von schlanken knickgefährdeten Bauteilen liegen Differentialgleichungen oder numerische Verfahren zur Ableitung der Tragfähigkeitsabminderung zugrunde. Die analytische Lösung von Hansen [4] liefert, mit ähnlichen Annahmen wie Haller [2], ein Nachweiskonzept mit direkter Ableitung der Ausmitte‐Krümmung‐Beziehung sowie der Tragfähigkeit für lineare und nichtlineare Spannungsverteilung im Querschnitt. Im vorliegenden Beitrag wird auf dem gleichen Lösungsweg die Tragfähigkeit mit der Annahme eines Spannungsblocks ermittelt. Mittels Grenzbedingungen wird zwischen gerissenem und ungerissenem Querschnitt unterschieden. Eine weitere Grenzbedingung definiert, ob der Querschnitt im Knick‐ oder Drucktragfähigkeitsbereich liegt. Je nach Fall und Bereich wird die Tragfähigkeitsabminderung direkt berechnet.Am gedrückten Querschnittsrand kann es zur Entfestigung kommen. Der Abbau der Randspannungen führt zur weiteren Krümmung des Stabes und demzufolge zur weiteren Tragfähigkeitsabminderung.
Untersuchung zur verbesserten Energiebedarfsermittlung von Baustellen
Authors: Bargstädt Hans‐Joachim , Guttenberger Peter , Kath Thilo , Schuster Andre 
Published: August 2006

AbstractDer Energieverbrauch von Baustellen ist von vielen Faktoren geprägt und im besonderen durch einen stark schwankenden und schwer prognostizierbaren Leistungsbedarf gekennzeichnet [8]. Gerade in Hinblick auf die zu erwartende Steigerung der Energiekosten ist es erforderlich, ein effizientes Energiecontrolling auf Baustellen zu betreiben [7]. Dabei stellen die Interaktion zwischen bauablaufbedingten Anforderungen und technischen Eigenschaften der Baugeräte die besondere Herausforderung für das Controlling der Energiekosten dar.Mit dem Ziel, neue Anwendungspotentiale für einen ressourcenschonenden und kostenbewußten Umgang mit Energieträgern auf Baustellen zu ermöglichen, wurden in Zusammenarbeit der Bauunternehmung Max Bögl und der Professur Baubetrieb und Bauverfahren der Bauhaus Universität Weimar Kriterien und Methoden entwickelt, mit denen eine strukturierte Erfassung relevanter Energieverbraucher möglich ist. Im Ergebnis wurde unter anderem ein EDV‐Tool entwickelt, mit dem die Entwicklung und Verbesserung von Energiemanagementsystemen auf Baustellen möglich ist.
A comparative investigation of the thermal unfolding of pseudoazurin in the Cu(II)‐holo and apo form
Authors: Stirpe Andrea , Sportelli Luigi , Guzzi Rita 
Published: August 2006

AbstractThe contribution of the copper ion to the stability and to the unfolding pathway of pseudoazurin was investigated by a comparative analysis of the thermal unfolding of the Cu(II)‐holo and apo form of the protein. The unfolding has been followed by calorimetry, fluorescence, optical density, and electron paramagnetic resonance (EPR) spectroscopy. The thermal transition of Cu(II)‐holo pseudoazurin is irreversible and occurs between 60.0 and 67.3°C, depending on the scan rate and technique used. The denaturation pathway of Cu(II)‐holo pseudoazurin can be described by the Lumry–Eyring model: N ⇔︁ U ⇔︁ F; the protein reversibly goes from the native (N) to the unfolded (U) state, and then irreversibly to the final (F) state. The simulation of the experimental calorimetric profiles, according to this model, allowed us to determine the thermodynamic and kinetic parameters of the two steps. The ΔG value calculated for the Cu(II)‐holo pseudoazurin is 39.2 kJ·mol−1 at 25°C. The sequence of events in the denaturation process of Cu(II)‐holo pseudoazurin emergence starts with the disruption of the copper site and the hydrophobic core destabilization followed by the global protein unfolding. According to the EPR findings, the native type‐1 copper ion shows type‐2 copper features after the denaturation. The removal of the copper ion (apo form) significantly reduces the stability of the protein as evidenced by a ΔG value of 16.5 kJ·mol−1 at 25°C. Moreover, the apo Paz unfolding occurs at 41.8°C and is compatible with a two‐state reversible process N ⇔︁ U.© 2006 Wiley Periodicals, Inc. Biopolymers 83: 487–497, 2006This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
Cognitive capacities of older adults who are asked to consent to medical treatment or to clinical research
Authors: Gatz Margaret 
Published: August 2006

AbstractKnowledge about cognitive changes characteristically found in older adults provides necessary context for administering consent procedures. It should neither be assumed that most adults over a certain age are too demented to consent nor that decision‐making is approached the same way by younger and older adults. Copyright © 2006 John Wiley & Sons, Ltd.
Magnetic Order Arising from Structural Distortion: Structure and Magnetic Properties of Ba2LnMoO6.
Authors: Cussen Edmund J. , Lynham Danny R. , Rogers Joseph 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Comparative Studies of the Decomposition of Alanates Followed by in situ XRD and DSC Methods.
Authors: Mamatha M. , Weidenthaler C. , Pommerin A. , Felderhoff M. , Schueth F. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Investigation of the Y2X3—Cu2X—SnX2 (X: S, Se) Systems
Authors: Shemet V. Ya. , Gulay L. D. , Stepien‐Damm J. , Pietraszko A. , Olekseyuk I. D. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Crystal Growth, Structure, Magnetic, and Transport Properties of TbRhIn5.
Authors: Williams Willa M. , Pham Long , MaQuilon Samuel , Moldovan Monica , Fisk Zachary , Young David P. , Chan Julia Y. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Asymmetric Allylation of Aryl Aldehydes: Studies on the Scope and Mechanism of the Palladium Catalyzed Diethylzinc Mediated Umpolung Using Phosphoramidite Ligands.
Authors: Howell Gareth P. , Minnaard Adriaan J. , Feringa Ben L. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enzymatic Enantioselective Reduction of α‐Ketoesters by a Thermostable 7α‐Hydroxysteroid Dehydrogenase from Bacteroides fragilis.
Authors: Zhu Dunming , Stearns Jennifer Elisabeth , Ramirez Monica , Hua Ling 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthetic Applications of α‐Fluoroalkylated Enones. Part 1. Use as Dienophiles in Diels—Alder Cycloadditions.
Authors: Leuger Julia , Blond Gaelle , Froehlich Roland , Billard Thierry , Haufe Guenter , Langlois Bernard R. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Oxidation of Ethers with Dimethyldioxirane.
Authors: Grabovskiy S. A. , Timerghazin Q. K. , Kabal'nova N. N. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Regioselectivity of Reduction Debromination of Substituted Pentabromobenzenes with Sodium tert‐Butoxide in DMSO.
Authors: Shishkin V. N. , Tarasova I. V. , Butin K. P. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Thionation Using Fluorous Lawesson′s Reagent.
Authors: Kaleta Zoltan , Makowski Brian T. , Soos Tibor , Dembinski Roman 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Facile Microwave‐Assisted Palladium‐Catalyzed Cyanation of Aryl Chlorides.
Authors: Chobanian Harry R. , Fors Brett P. , Lin Linus S. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Novel Approach to C‐Trimethylsilyl‐1,3‐azoles.
Authors: Zarudnitskii Evgenij V. , Pervak Igor I. , Merkulov Anatolij S. , Yurchenko Aleksandr A. , Tolmachev Andrej A. , Pinchuk Aleksandr M. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Polyionic Gels: Efficient Heterogeneous Media for Metal Scavenging and Catalysis.
Authors: Thiot Carine , Schmutz Marc , Wagner Alain , Mioskowski Charles 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Zeolite Catalyzed Acylation of Alcohols and Amines with Acetic Acid under Microwave Irradiation.
Authors: Mohan K. V. V. Krishna , Narender N. , Kulkarni S. J. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Bis(2‐acyl‐2‐chlorovinyl) Sulfides
Authors: Bozhenkov G. V. , Savosik V. A. , Mirskova A. N. , Levkovskaya G. G. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of β‐Hydroxy Sulfones via Opening of Hydrophilic Epoxides with Zinc Sulfinates in Aqueous Media.
Authors: Chumachenko Nataliya , Sampson Paul 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
2‐Hydroxy‐1,2,3,6‐tetrahydro‐azulen‐6‐carboxylic Acid Ethyl Ester — A Novel Precursor for a New Class of Liquid Crystalline Materials.
Authors: Hussain Zakir , Hopf Henning , Pohl Ludwig , Rantanen Toni 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Efficient Method for Iodination of Alcohols Using KI/Silica Sulfuric Acid (SSA).
Authors: Hajipour Abdol R. , Zarei Amin , Ruoho Aronold E. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
BINAM‐Prolinamides as Recoverable Catalysts in the Direct Aldol Condensation.
Authors: Guillena Gabriela , del Carmen Hita Maria , Najera Carmen 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Novel Norephedrine‐Based Chiral Ligands with Multiple Stereogenic Centers and Their Application in Enantioselective Addition of Diethylzinc to Aldehyde and Chalcone.
Authors: Unaleroglu Canan , Aydin A. Ebru , Demir Ayhan S. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
“Achiral” Benzophenone Ligand for Highly Enantioselective Ru Catalysts in Ketone Hydrogenation.
Authors: Mikami Koichi , Wakabayashi Kazuki , Aikawa Kohsuke 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Potent Inhibitory Effects of Resveratrol Derivatives on Progression of Prostate Cancer Cells.
Authors: Yoo Kyung Mi , Kim Sanghee , Moon Bo Kyung , Kim Sung Soo , Kim Kyung Tack , Kim Sun Yeou , Choi Sang Yoon 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
An Efficient and Rapid Chalcogenide‐Morita—Baylis—Hillman Process Promoted by TBDMSOTf and a Thiolane.
Authors: Rao Jamjanam Srivardhana , Briere Jean‐Francois , Metzner Patrick , Basavaiah Deevi 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Organic Base‐Catalyzed Stereoselective Isomerizations of 4‐Hydroxy‐4‐phenyl‐but‐2‐ynoic Acid Methyl Ester to (E)‐ and (Z)‐4‐Oxo‐4‐phenyl‐but‐2‐enoic Acid Methyl Esters.
Authors: Sonye John P. , Koide Kazunori 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Tetra‐n‐butylammonium Hydroxide (TBAH)‐Catalyzed Knoevenagel Condensation: A Facile Synthesis of α‐Cyanoacrylates, α‐Cyanoacrylonitriles, and α‐Cyanoacrylamides.
Authors: Balalaie Saeed , Bararjanian Morteza 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Solvent‐Free N‐Alkylation of Phenyl Sulfanilides under Microwave Irradiation.
Authors: Jaisankar P. , Srinivasan P. C. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
CuI/DABCO‐Catalyzed Cross‐Coupling Reactions of Aryl Halides with Arylboronic Acids.
Authors: Li Jin‐Heng , Wang De‐Ping 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
One‐Pot Synthesis of Benzofuryl‐Substituted Semicarbazides under Microwave Irradiation.
Authors: Wang Xi‐Cun , Chai Lan‐Qin , Wang Man‐Gang , Quan Zheng‐Qun , Li Zheng 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New HIV‐1 Reverse Transcriptase Inhibitors Based on a Tricyclic Benzothiophene Scaffold; Synthesis, Resolution, and Inhibitory Activity.
Authors: Krajewski Krzysztof , Zhang Yijun , Parrish Damon , Deschamps Jeffrey , Roller Peter P. , Pathak Vinary K. 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Anodic Cyanation of 1‐Arylpyrrolidines.
Authors: Liu Wei , Ma Yuan , Yin Yingwu , Zhao Yufen 
Published: August 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.