bluuebunny/crossref_metadata_2025_split huggingface dataset:
Early results from a randomized clinical trial of colon J pouch versus transverse coloplasty pouch after low anterior resection for rectal cancer
Authors: Ulrich A B , Seiler C M , Z'graggen K , Löffler T , Weitz J , Büchler M W 
Published: August 2008

Abstract

Background
Patients with primary rectal cancer undergoing low anterior resection are often reconstructed using a pouch procedure. The aim of this trial was to compare colon J pouch (CJP) with transverse coloplasty pouch (TCP) reconstruction with regard to functional results, perioperative mortality and morbidity. As there is considerable uncertainty over the true anastomotic leak rate in patients with a TCP, the study analysed short-term outcome data.

Methods
Elective patients suitable for either procedure after sphincter-saving low anterior resection were eligible. Randomization took place during surgery. The primary endpoint was the rate of late evacuation problems after 2 years; secondary endpoints were anastomotic leak rate, perioperative morbidity and mortality.

Results
Between 21 October 2002 and 5 December 2005, 149 patients were randomized. All 76 patients randomized to TCP had the procedure compared with 68 of the 73 patients (93 per cent) randomized to CJP. Both groups were comparable with regard to demographic and clinical characteristics. Surgical complications (CJP: 19 per cent; TCP: 18 per cent) and the overall anastomotic leak rate (8 per cent) were equally distributed in both groups.

Conclusion
This trial demonstrated a comparable early outcome for TCP and CJP. This contradicts previous reports suggesting a higher leak rate after TCP. Registration number: ISRCTN78983587 (http://www.controlled-trials.com).
Gland-preserving surgery for pleomorphic adenoma in the submandibular gland
Authors: Roh J-L , Park C I 
Published: August 2008

Abstract

Background
Removal of tumours arising in the submandibular gland (SMG) usually involves excision of the entire gland. This prospective study evaluated the efficacy of gland-preserving surgery in patients with benign SMG tumours.

Methods
Twenty consecutive patients with pleomorphic adenomas in the SMG underwent local excision of tumours with limited tumour-free margins and preservation of the remnant glandular tissues. All patients had salivary scintigraphy before and 6 months after surgery, with ultrasonography 2 years after operation. Complications, operating time, salivary function and rates of tumour recurrence were evaluated.

Results
The mean operating time was 28 min, and no patient had neurological complications. After surgery, the function of the affected gland was equal to that of the unaffected gland. All patients had symmetrical facial contours without defects in the operated submandibular triangle. None of the patients had evidence of tumour recurrence on ultrasonographic examination and regular clinical examination at a median of 36 months after surgery.

Conclusion
Gland-preserving surgery in patients with benign SMG tumours preserves salivation, and reduces surgical morbidity and operating time, with good cosmesis but without compromising local control.
Leucocyte and platelet adhesion in different layers of the small bowel during experimental total warm ischaemia and reperfusion
Authors: Beuk R J , Tangelder G-J , Maassen R L J G , Quaedackers J S L T , Heineman E , oude Egbrink M G A 
Published: August 2008

AbstractBackgroundIschaemia and reperfusion (IR) of the small bowel is involved in many clinical conditions. A key component in IR-induced tissue damage is microvascular dysfunction. The aim was to investigate the role of leucocytes and platelets in capillary flow impediment and tissue damage.MethodsAnaesthetized rats were subjected to 30 min warm ischaemia of the small bowel, followed by 1 h reperfusion. To elucidate the influence of leucocytes on platelet adhesion, leucocyte–vessel wall interactions induced by IR were prevented by anti-platelet activating factor (PAF) or anti-intercellular adhesion molecule (ICAM)-1. Intravital videomicroscopy was performed and tissue injury was evaluated histologically.ResultsIn submucosal venules, IR induced an increase in the median number of interacting leucocytes from 3 to 10 and 20 leucocytes per 100-µm venule segment after 10 and 60 min reperfusion respectively. Anti-PAF or anti-ICAM-1 completely attenuated this increase, resulting in an eightfold improvement in submucosal capillary flow and reduced tissue injury. Shedding of villi no longer occurred. Platelet–vessel wall interactions occurred particularly in submucosal venules, but were not affected by anti-PAF or anti-ICAM-1.ConclusionSmall bowel IR initiated an inflammatory and thrombotic response in the submucosal layer only. Attenuation of leucocyte adhesion improved submucosal capillary perfusion, preventing shedding of mucosal villi.
Clinical, physiological and radiological assessment of rectovaginal septum reinforcement with mesh for complex rectocele
Authors: D'Hoore A , Vanbeckevoort D , Penninckx F 
Published: August 2008

Abstract

Background
Rectocele can be part of a more complex rectal prolapse syndrome including rectal intussusception and enterocele. This reflects insufficiency at different levels of support in the posterior pelvic compartment. A new technique involving reinforcement of the rectovaginal septum with mesh by a combined laparoscopic and perineal approach was evaluated.

Methods
The study included 18 patients with a complex rectocele and grade 2–3 rectal intussusception and enterocele (eight patients). Patients had clinical, physiological and radiological follow-up.

Results
There was no major perioperative morbidity and mean hospital stay was 4·5 (range 3–7) days. After a mean of 24·2 (range 13–35) months there was no clinical recurrence of rectocele. Symptoms of obstructed defaecation resolved in 14 of 17 patients. The Patient Assessment of Constipation Symptoms score decreased from a mean(s.d.) of 12·6(5·9) to 3·9(4·2), and a rectocele symptom score from 14·3(3·3) to 2·3(2·8). No new-onset constipation, urge or faecal incontinence nor new-onset dyspareunia was reported. Radiological investigation in eight patients revealed a sufficient anatomical repair at the different levels of support. A slight decrease in rectal compliance was measured, with no significant reduction in rectal capacity.

Conclusion
Complete rectovaginal septum reinforcement with mesh corrected complex rectoceles, with good functional outcome.
Social experience and school bullying
Authors: Bacchini Dario , Esposito Giovanna , Affuso Gaetana 
Published: August 2008

AbstractThe goal of the present study is to investigate the relationship between school bullying and various aspects of the urban and scholastic environment where participants live, such as sense of community, exposure to dangerous and violent situations within the neighbourhood, perceptions of the safety of the neighbourhood and perceptions of the school environment. The research, performed in Ercolano, a town near Naples, covered the whole of Ercolano's population (n = 734) of 7th, 10th and 13th grade students. Data were analysed using a multivariate analysis of variance. Results showed that bullying role (pure bullies, pure victims, bully victims, not‐involved) is significantly associated with the way subjects perceive their exposure to dangerous and violent situations within the neighbourhood, their relationship with classmates and their relationship with teachers.Pure bulliesandbully victimsare especially likely to experience dangerous and violent situations in the neighbourhood where they live and have a more negative perception of their relationship with teachers; forpure victimsandbully victims, a significant association is obtained with negative perceptions of relationships with classmates. These findings suggest the need for intervention strategies that extend beyond the classroom to the broader community and neighbourhood. Copyright © 2008 John Wiley & Sons, Ltd.
Palladium‐Based Telomerization of 1,3‐Butadiene with Glycerol Using Methoxy‐Functionalized Triphenylphosphine Ligands
Authors: Palkovits Regina , Nieddu Ilenia , Kruithof Cornelis A. , Klein Gebbink Robertus J. M. , Weckhuysen Bert M. 
Published: August 2008

AbstractGlycerol is considered a potential renewable building block for the synthesis of existing as well as new chemicals. A promising route is the telomerization of 1,3‐butadiene with glycerol leading to C8 chain ethers of glycerol with applications in, for example, surfactant chemistry. Recently, we reported a new set of palladium‐based homogeneous catalytic systems for the telomerization of 1,3‐butadiene with glycerol and found that palladium complexes bearing methoxy‐functionalized triphenylphosphine ligands are highly active catalysts capable of converting crude glycerol without any significant loss of activity. Herein, we present a detailed account of these investigations by reporting on the influence of the butadiene/glycerol ratio, temperature, and reaction time on product selectivity and activity allowing further optimization of catalyst performance. Maximum activity and yield were reached for high 1,3‐butadiene/glycerol ratios at a temperature of 90 °C, whereas the selectivity for mono‐ and diethers of glycerol could be optimized by combining high reaction temperatures and short reaction times with low butadiene/glycerol ratios. Variation of the PdII metal precursors and the metal/ligand ratio showed that palladium precursors with halogen ligands gave unsatisfying results, in contrast to precursors with weakly coordinated ligands such as [Pd(OAc)2] and [Pd(acac)2]. [Pd(dba)2], the only Pd0 precursor tested, gave the best results in terms of activity, which illustrates the importance of the ability to form a Pd0 species in the catalytic cycle. Finally, base addition resulted in a shortening of the reaction time and most likely facilitates the formation of a Pd0 species. Based on these results, we were able to realize the first attempts towards a rational ligand design aimed at a high selectivity for mono‐ and diether formation.
Combination of Lacunary Polyoxometalates and High‐Nuclear Transition Metal Clusters under Hydrothermal Conditions: IX. A Series of Novel Polyoxotungstates Sandwiched by Octa‐Copper Clusters
Authors: Zhao Jun‐Wei , Wang Chun‐Mei , Zhang Jie , Zheng Shou‐Tian , Yang Guo‐Yu 
Published: August 2008

AbstractThe reaction of CuCl2⋅2 H2O with trivacant Keggin polyoxoanions K8Na2[A‐α‐GeW9O34]⋅25 H2O or K10[A‐ α‐SiW9O34]⋅25 H2O in the presence of 1,2‐diaminopropane (dap), ethylenediamine (en) or 2,2′‐bipyridine (2,2′‐bpy) under hydrothermal conditions afforded five novel hybrid inorganic–organic octa‐Cu sandwiched polyoxotungstates (POTs): H4[CuII8(dap)4(H2O)2(B‐α‐GeW9O34)2]⋅13 H2O (1), (H2en)2[CuII8(en)4(H2O)2(B‐α‐GeW9O34)2]⋅5 H2O(2), (H2en)2[CuII8(en)4(H2O)2(B‐α‐SiW9O34)2]⋅8 H2O (3), [CuII(H2O)2]H2[CuII8(en)4(H2O)2(B‐α‐SiW9O34)2] (4), and [CuII2(H2O)2(2,2′‐bpy)2]{[CuII(bdyl)]2[CuII8(2,2′‐bpy)4(H2O)2(B‐α‐GeW9O34)2]}⋅4 H2O (bdyl=2,2′‐bipyridinyl)(5). Additionally, CuCl2⋅2 H2O reacts with the mixture of GeO2, Na2WO4⋅2 H2O, H2SiW12O40⋅2 H2O in the presence of 2,2′‐bpy and 4,4′‐bpy under hydrothermal conditions leading to another novel mixed‐valent octa‐Cu sandwiched POT hybrid: [CuI(2,2′‐bpy)(4,4′‐bpy)]2[{CuI2(2,2′‐bpy)2(4,4′‐bpy)]2[CuI2CuII6(2,2′‐bpy)2(4,4′‐bpy)2(B‐α‐GeW9O34)2}]⋅2 H2O (6). 1, 2, and 3 are discrete dimers constructed from two trivacant Keggin [B‐α‐XW9O34]10− (X=GeIV/SiIV) fragments and an octa‐Cu cluster whereas 4 displays the 3D (3,6)‐connected nets with (4⋅62)(42⋅64⋅87⋅102) topology, which are built by octa‐Cu sandwiched polyoxometalate building blocks through copper cation bridges. 5 is a novel 2D layer based on octa‐Cu sandwiched POT clusters and [CuII2(bdyl)] units. Interestingly, the rollover metalation of 2,2′‐bpy is firstly observed in the system containing the copper complex under hydrothermal conditions. 6 is a discrete mixed‐valent octa‐Cu sandwiched POT supported by two CuI‐complexes [CuI2(2,2′‐bpy)2(4,4′‐bpy)]2+ through 4,4′‐bpy bridges, which constructs a novel dodeca‐copper cluster. Notably, the octa‐Cu cluster in 6 is mixed‐valent and is different from those in 1–5. To our knowledge, 1–6 represent a rare family of POTs incorporating novel octa‐nuclear transition‐metal clusters in polyoxometalate chemistry. They were structurally characterized by FT‐IR spectra, elemental analysis, thermogravimetric analysis, and single‐crystal X‐ray diffraction. The magnetic properties of 1, 4, and 5 were quantitatively analyzed by the MAGPACK software package.
Interplay between Acetate Ions, Peripheral Groups, and Reactivity of the Core Nitrogens in Transmetalation of Tetrapyrroles
Authors: Orzeł Łukasz , Fiedor Leszek , Wolak Maria , Kania Agnieszka , van Eldik Rudi , Stochel Grażyna 
Published: August 2008

AbstractThe mechanism of acetate‐assisted transmetalation of tetrapyrroles was investigated in a model system consisting of chlorophyll a and copper(II) acetate in organic solvents by using a spectroscopic and kinetic approach. Surprisingly, acetate ions bind to the central Mg in chlorophyll much more strongly than do acetonitrile, methanol and even pyridine, one of the best ligands in chlorophyllic systems. This exceptionally strong non‐symmetrical axial ligation of the central Mg by acetate causes its out‐of‐plane displacement and deformation of the tetrapyrrole ring, thus facilitating the interaction with an incoming CuII complex. This mechanism is controlled by a keto–enol tautomerism of the chlorophyll isocyclic ring. Additionally, depending on solvent, acetate activates the incoming metal ions. These new insights allow to suggest a mechanism for the acetate method of metal exchange in tetrapyrrolic macrocycles, which resembles biological insertion of metal ions into porphyrins. It also provides a guideline for the design of more efficient methods for the metalation of porphyrins and related macrocycles.
Molecules with New Topologies Derived from Hydrogen‐Bonded Dimers of Tetraurea Calix[4]arenes
Authors: Bogdan Anca , Bolte Michael , Böhmer Volker 
Published: August 2008

AbstractTetraurea calix[4]arenes 2 have been synthesized in which two adjacent aryl urea residues are connected to a loop by an aliphatic chain ‐O‐(CH2)n‐O‐. The remaining urea residues have a bulky 3,5‐di‐tert‐butylphenyl residue and an ω‐alkenyloxyphenyl residue. Since this bulky residue cannot pass through the loop, only one homodimer (2⋅2) is formed in apolar solvents, for steric reasons, in which the two alkenyl residues penetrate the two macrocyclic loops. Covalent connection of these alkenyl groups by olefin metathesis followed by hydrogenation creates compounds 3, which consist of molecules with hitherto unknown topology. Their molecular structure was confirmed by 1H NMR spectroscopy and ESIMS, and for one example by single‐crystal X‐ray analysis.
ChemInform Abstract: An ab initio Potential Energy Surface and Vibrational Energy Levels of HXeBr.
Authors: Huang Zheng Guo , Yang En Cui , Xie Dai Qian 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Copper—Indium Ordering in LnCu6In6 (Ln: Y, Ce, Pr, Nd, Gd, Tb, Dy).
Authors: Zaremba Roman , Muts Ihor , Hoffmann Rolf‐Dieter , Kalychak Yaroslav M. , Zaremba Vasyl' I. , Poettgen Rainer 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Structural Characterization of SrLaMnRuO6 by Synchrotron X‐Ray Powder Diffraction and X‐Ray Absorption Spectroscopy
Authors: Bashir Javaid , Shaheen Rubina , Khan Muhammad Nasir 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: From a 3D Protonic Conductor VO(H2PO4)2 to a 2D Cationic Conductor Li4VO(PO4)2 Through Lithium Exchange.
Authors: Caignaert V. , Kishore M. Satya , Pralong V. , Raveau B. , Creon N. , Fjellvaag H. 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Phase Relationships in the La—Ti—Sn Ternary System at 473 K.
Authors: Zhan Yongzhong , Xu Yanfei , Xie Haofeng , Yu Zhengwen , Wang Ying , Zhuang Yinghong 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: New Synthesis of Excellent Visible‐Light TiO2‐xNx Photocatalyst Using a Very Simple Method.
Authors: Li Danzhen , Huang Hanjie , Chen Xu , Chen Zhixin , Li Wenjuan , Ye Dong , Fu Xianzhi 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Allylic Alkylation by Palladium‐Bisphosphinites.
Authors: Sharma Rakesh K. , Nethaji Munirathnam , Samuelson Ashoka G. 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: C1‐Symmetrical Ti(OTos)2‐ and TiCl2‐TADDOLate‐Catalyzed 1,3‐Dipolar Cycloaddition Reactions of Nitrones to Electron‐Deficient Alkenes.
Authors: Wang Yan‐xia , Zhu Yong‐kuan , Liu Bo , You Jun , Liu Nan 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cobalt/Rhodium Heterobimetallic Nanoparticle‐Catalyzed Carbonylative [2 + 2 + 1] Cycloaddition of Allenes and Bisallenes to Pauson—Khand‐Type Reaction Products.
Authors: Park Ji Hoon , Kim Eunha , Kim Hyeong‐Mook , Choi Soo Young , Chung Young Keun 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Protonolysis of the Carbon—Palladium Bond in Palladium(II)‐Catalyzed Enyne Cyclization in Imidazolium‐Type Ionic Liquids.
Authors: Yang Shao‐Rong , Jiang Huan‐Feng , Li Yi‐Qun , Chen Huo‐Ji , Luo Wei , Xu Yan‐Bin 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Bismuth Triflate Catalyzed Rearrangement of Acetates of the Baylis—Hillman Adducts into (E)‐Trisubstituted Alkenes.
Authors: Ollevier Thierry , Mwene‐Mbeja Topwe M. 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Direct Synthesis of Bicyclic Guanidines Through Unprecedented Palladium(II) Catalyzed Diamination with Copper Chloride as Oxidant.
Authors: Hoevelmann Claas H. , Streuff Jan , Brelot Lydia , Muniz Kilian 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium Bis(2,2,6,6‐Tetramethyl‐3,5‐heptanedionate) Catalyzed Suzuki, Heck, Sonogashira, and Cyanation Reactions.
Authors: Nandurkar Nitin S. , Bhanage Bhalchandra M. 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Facile Preparation of Aryl Sulfides Catalyzed by PEG400 and Nickel Without Solvent.
Authors: Cao Yu‐Qing , Zhang Zhan , Guo Yan‐Xin , Wu Guo‐Qiang 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: 1,2‐Acyl Group Migration in the Oxidative Free Radical Reaction of 2‐Substituted‐1,4‐quinones.
Authors: Tsai An‐I , Chuang Che‐Ping 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Dehydroiodination of 2‐Iodo‐3‐(polyfluoroalkyl)propoxymethyloxiranes.
Authors: Bazhin D. N. , Gorbunova T. I. , Zapevalov A. Ya. , Saloutin V. I. 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chiral Tertiary 2‐Furyl Alcohols: Diversified Key Intermediates to Bioactive Compounds. Their Enantioselective Synthesis via (2‐Furyl)aluminum Addition to Ketones Catalyzed by a Titanium Catalyst of (S)‐BINOL.
Authors: Wu Kuo‐Hui , Chuang Da‐Wei , Chen Chien‐An , Gau Han‐Mou 
Published: August 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.