bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficient Photocycloreversion Reaction of Diarylethenes by Introduction of Cyano Subsutituents to the Reactive Carbons
Authors: Morimitsu Kentaro , Kobatake Seiya , Nakamura Shinichiro , Irie Masahiro 
Published: August 2003

Abstract
Highly efficient photocycloreversion reaction was observed for diarylethene derivatives with cyano groups at the reactive carbons of the thiophene rings. The cycloreversion quantum yield of 1,2-bis(2-cyano-5-phenyl-3-thienyl)perfluorocyclopentene was found to be ca. 30 times larger than that of 1,2-bis(2-methyl-5-phenyl-3-thienyl)perfluorocyclopentene.
Excellent Catalytic Performances of SBA-15-supported Vanadium Oxide for Partial Oxidation of Methane to Formaldehyde
Authors: Lin Baomin , Wang Xiaoxing , Guo Qian , Yang Wei , Zhang Qinghong , Wang Ye 
Published: August 2003

Abstract
Vanadium oxide supported on SBA-15 exhibits superior catalytic performances for the partial oxidation of methane to formaldehyde. A space-time yield of formaldehyde as high as 93 mol kgcat.−1h−1 has been obtained with a formaldehyde selectivity of 94% over 3 wt % VOx/SBA-15 catalyst, significantly higher than those reported so far.
Large-scale Synthesis of Luminescent Y2O3:Eu Nanobelts
Authors: He Yu , Tian Ye , Zhu Yongfa 
Published: August 2003

Abstract
A two-step method was developed for the large-scale synthesis of luminescent Y2O3:Eu nanobelts. The structure and composition of the as-prepared Y2O3:Eu were characterized by XRD, TEM, and EDX. The luminescent performance of the nanobelts was also characterized and the result was different from that of the other Y2O3:Eu materials observed before.
1,2-Bis[(4-phenylpyridinio)methyl]benzene Dication. Its Unprecedented Selective Complexation with H2PO4−
Authors: Gono Hideyuki , Tamagaki Seizo 
Published: August 2003

Abstract
The anion complexation ability of 1,2-bis[(4-phenylpyridinio)methyl]benzene dichloride in MeCN was examined by UV-titration. The compound produced selectively the sufficiently strong H2PO4− complex in a 1:2 molar ratio. The presence of both of the 4-phenyl moieties was required for the H2PO4−-selection. The X-ray crystallography of the complex structure is presented.
Novel Selective Oxidation of Light Alkanes Using Carbon Dioxide. Oxidized Diamond as a Novel Catalytic Medium
Authors: Nakagawa Kiyoharu , Okumura Kimito , Shimamura Takahiro , Ikenaga Na-oki , Suzuki Toshimitsu , Kobayashi Tetsuhiko , Nishitani-Gamo Mikka , Ando Toshihiro 
Published: August 2003

Abstract
Carbon dioxide is an effective oxidant for the conversion of alkanes to chemical feedstocks. Oxidized diamond is useful as a novel catalytic support material. Oxidized diamond provided catalytic sites for the activation of alkanes under CO2 atmosphere. The present findings also suggest that the surface-properties of oxidized diamond may facilitate unique catalytic reactions, such as alkanes conversion in the presence of CO2.
Anisotropic Alignment Change of Columnar Liquid Crystal by Polarized Infrared Irradiation
Authors: Monobe Hirosato , Kiyohara Kenji , Terawasa Naohiro , Heya Manabu , Awazu Kunia , Shimizu Yo 
Published: August 2003

Abstract
Infrared photoinduced alignment change of liquid crystal domains was investigated and a uniform and anisotropic change of domains was observed. The texture observation and polarized microscopic IR spectra show that a change of the molecular alignment occurred and the direction of columns depends on the polarizing angle of an irradiating infrared light.
Reaction of Acetone on Coodinated Nitrile in β-Diketonato Ruthenium Complex, [Ru(acac)2(CH3CN)2] with the formation of β-Ketiminate
Authors: Hashimoto Takeshi , Hara Shuhei , Shiraishi Yumi , Natarajan Karuppannan , Shimizu Kunio 
Published: August 2003

Abstract
Synthesis and characterization of a new ruthenium complex, [Ru(acac)2(mhmk)] (1) with coordinated β-ketiminate ligand are described. The complex has been obtained by the reaction of acetone on coordinated acetonirile in [Ru(acac)2(CH3CN)2], the first such reaction to be observed. X-ray structure of 1 is similar to that of [Ru(acac)3]. Cyclic voltammetric studies of 1 show a negative shift for both reduction and oxidation indicating that there is large electron density on ruthenium containing β-ketiminate ligand when compared to ruthenium containing only β-diketonato ligands, [Ru(acac)3].
Photochemistry of a Tellurosilyl(carbonyl)iron(II) Complex. Generation of a Novel Te–Si–Fe Three-membered Cyclic Intermediate
Authors: Okada Hiroshi , Okazaki Masaaki , Tobita Hiromi , Ogino Hiroshi 
Published: August 2003

Abstract
The tellurosilyliron complex Cp*(CO)2FeSiMe2TePh (1) was synthesized by treatment of Cp*(CO)2FeSiMe2Cl with LiTePh. Irradiation of complex 1 and acetone in toluene led to dissociation of a CO ligand and insertion of acetone into the silicon–tellurium bond to afford the five-membered metallacycle Cp*(CO)Fe{κ2(Si,Te)-Me2SiOCMe2TePh}.
Photochemical mer → fac One-way Isomerization of Phosphorescent Material. Studies by Time-resolved Spectroscopy for Tris[2-(4′,6′-difluorophenyl)pyridine]iridium(III) in Solution
Authors: Karatsu Takashi , Nakamura Takeshi , Yagai Shiki , Kitamura Akihide , Yamaguchi Kentaro , Matsushima Yoshimasa , Iwata Takeshi , Hori Yoji , Hagiwara Toshimitsu 
Published: August 2003

Abstract
Photochemical characterization is reported for the mer-stereoisomer of fac-tris[2-(4′,6′-difluorophenyl)pyridine]iridium(III) (2), which has attracted attention as a electrophosphorescent material. The mer-2 has a much smaller emission-quantum yield and a shorter emission lifetime than those of the fac-isomer. The relation of the photophysical properties of mer-2 and one-way photoisomerization to fac-2 is discussed.
Kikuchi Fujimoto lymphadenitis: Case report and literature review
Authors: Famularo Giuseppe , Giustiniani Maria Cristina , Marasco Angela , Minisola Giovanni , Nicotra Giulio Cesare , De Simone Claudio 
Published: August 2003

AbstractWe describe a young woman with two severe episodes of Kikuchi Fujimoto disease occurring 16 years apart. Both episodes were proven by biopsy, and on the second occasion the patient remained dependent on high‐dose prednisone for more than 6 months in order to control inflammation and achieve a reduction in cervical lymph node size. The second lymph node biopsy showed leukocytoclastic vasculitis in addition to the typical features of Kikuchi Fujimoto disease, but, even though the clinical interpretation of this finding was unclear, we documented no clinical or laboratory evidence of the development of other serious systemic disease over 20 years of follow‐up. Kikuchi Fujimoto disease is considered a disorder with a self‐limited course and a favorable outcome. However, on the basis of our experience with this patient and data from peer‐reviewed literature, we suggest that this generally accepted postulate should be revised. Am. J. Hematol. 74:60–63, 2003. © 2003 Wiley‐Liss, Inc.
Fluorescence in situ hybridization: Method of choice for a definitive diagnosis of mantle cell lymphoma†
Authors: Sun Tsieh , Nordberg Mary Lowery , Cotelingam James D. , Veillon Diana M. , Ryder John 
Published: August 2003

AbstractFluorescence in situ hybridization (FISH) using IGH/CCND1 probes was used to analyze 35 specimens including 27 paraffin sections, 3 bone marrow aspirates, and 5 peripheral blood smears. The 27 paraffin sections included 7 bone marrows, 10 lymph nodes, 3 spleens, 3 tonsils, 3 gastrointestinal biopsies, and 1 skin biopsy. Among these cases, 23 specimens were from 20 patients with mantle cell lymphoma (MCL) and 12 specimens were from 12 patients with non‐MCL lymphomas/lymphoid hyperplasia. Specimens from all MCL patients showed positive results with FISH. In one patient, the archived paraffin sections were negative with FISH, but a fresh peripheral blood specimen showed a positive result. Negative results were obtained in all specimens from non‐MCL cases. Flow cytometric analysis revealed that all cases of MCL showed CD19/CD5 staining, but the percentages of cells positive for CD23 and FMC‐7 were variable, thus they cannot be depended upon for a definitive diagnosis of MCL. Immunohistochemical stains demonstrated positive staining for CD5 and CD20 and negative staining for CD23 in MCL cases but cyclin D1 was positive in only 10 of 13 MCL cases studied. Therefore, it appears that immunophenotyping alone is not sufficient to establish a definitive diagnosis of MCL. FISH should be routinely used when the diagnosis needs confirmation. FISH can be performed in a routine clinical laboratory, and it is applicable to archived material for retrospective studies. Other molecular cytogenetic techniques in comparison with FISH are discussed. Am. J. Hematol. 74:78–84, 2003. Published © 2003 Wiley‐Liss, Inc.
Thrombotic thrombocytopenic purpura associated with a prolactin‐producing pituitary adenoma
Authors: Kovacs Kalman , Garvey M. Bernadette 
Published: August 2003

AbstractWe report here the case of a 44‐year‐old woman with thrombocytopenia, anemia, convulsions, hyperprolactinemia, and galactorrhea. The patient died of cardiac failure. Autopsy revealed PAS‐positive and von Willebrand factor‐positive microthrombi in the arterioles and capillaries of many organs, mainly in the heart and brain, confirming the clinical diagnosis of thrombotic thrombocytopenic purpura. In the pituitary, a prolactin‐producing adenoma was identified. To our knowledge, thrombotic thrombocytopenic purpura accompanied by a prolactin‐secreting pituitary adenoma has not yet been described. The question of whether the association between the vascular changes and the pituitary adenoma is incidental or causal cannot be answered. Further studies are required to determine whether prolactin released from the pituitary tumor in excess played a role in the formation of microthrombi causing multiple organ failure and the demise of the patient. Am. J. Hematol. 74:55–59, 2003. © 2003 Wiley‐Liss, Inc.
Zileuton, a 5‐lipoxygenase inhibitor, increases production of thromboxane A2 and platelet aggregation in patients with asthma
Authors: Wu Xujun , Dev Anil , Leong Alfred Ba Tun 
Published: August 2003

AbstractLeukotrienes, generated from arachidonic acid via the lipoxygenase pathway, play an important role in the pathophysiology of asthma. Therefore, leukotriene inhibitors, such as Zileuton, are used in the treatment of asthma. However, thromboxanes, generated from arachidonic acid via the cyclooxygenase pathway, play an important role in platelet aggregation and thrombosis. Therefore, we studied whether Zileuton, by shifting arachidonic acid to the cyclooxygenase pathway, enhances thromboxane production and, hence, platelet aggregation. Blood samples were collected from 10 asthmatic patients before and 2 weeks after standard Zileuton treatment. Spontaneous platelet aggregation was measured in platelet‐rich plasma. Platelet‐rich plasma was also used to determine thromboxane B2, a stable metabolite of thromboxane A2, as the indirect measure of thromboxane A2 because thromboxane A2 is too unstable for assay. Baseline thromboxane B2 and platelet aggregation values in the 10 asthmatic patients were normal. Treatment with Zileuton for 2 weeks significantly increased thromboxane B2 levels from baseline levels of 267 ± 54 μg/l to 389 ± 62 μg/l after 2 weeks of treatment (P < 0.0002). Spontaneous platelet aggregation also increased significantly from baseline values of 4.2 ± 2.4% to 6.8 ± 2.8% after 2 weeks of treatment (P < 0.0001). These results establish that Zileuton, an effective drug for asthma, adversely affects in vitro platelet function. The findings suggest that this drug, and perhaps related agents also, may pose a thrombotic risk; clinical attention will be needed to address this possibility. Am. J. Hematol. 74:23–25, 2003. © 2003 Wiley‐Liss, Inc.
Hypereosinophilia associated with cardiac rhabdomyosarcoma
Authors: Lo Re Vincent , Fox Kevin R. , Ferrari Victor A. , Scott Craig H. , Kossev Plamen M. , Kostman Jay R. 
Published: August 2003

AbstractHypereosinophilia, defined as an absolute eosinophil count exceeding 1,500/mm3, is caused by a limited number of disorders. Its association with malignancy is a rare occurrence that typically denotes extensive metastasis and a poor prognosis. Several theories have been proposed to explain the hypereosinophilia associated with malignancy, focusing on the production of eosinophilopoietic cytokines by tumors. We describe a patient with hypereosinophilia associated with a cardiac rhabdomyosarcoma, review the etiologies of hypereosinophilia, and discuss the possible mechanisms. Am. J. Hematol. 74:64–67, 2003. © 2003 Wiley‐Liss, Inc.
Priapism in a patient with unstable hemoglobin: Hemoglobin Köln
Authors: Andrieu Valérie , Dumonceau Olivier , Grange Marie‐José 
Published: August 2003

AbstractWe report a case of severe priapism occurring in a patient with unstable hemoglobin, hemoglobin Köln, and underline several factors that may have contributed to this complication: abnormal plasticity of red cells, splenectomy, and cytomegalovirus infection. Since emergency treatment may prevent impotence, patients and parents should be educated about this complication. Am. J. Hematol. 74:73–74, 2003. © 2003 Wiley‐Liss, Inc.
Ineffective erythropoiesis in the spleen of a patient with pyruvate kinase deficiency
Authors: Aizawa Shin , Kohdera Urara , Hiramoto Masaki , Kawakami Yutaka , Aisaki Ken‐ichi , Kobayashi Yohnosuke , Miwa Shiro , Fujii Hisaichi , Kanno Hitoshi 
Published: August 2003

AbstractIn this study, possible adverse effects of pyruvate kinase (PK) deficiency on the maturation of erythroid progenitors were investigated. A 4‐year‐old Japanese girl with severe PK deficiency underwent splenectomy to reduce her need for blood transfusions. The spleen was examined a histologically, and the hematopoietic progenitors in the spleen were assayed to evaluate the extramedullary hematopoiesis of this PK‐deficient subject. The number of hematopoietic progenitors including CFU‐GM, BFU‐E and CFU‐GEMM in the spleen of the PK‐deficient patient was much higher than those found in control spleens, indicating enhanced extramedullary hematopoiesis. TUNEL assay demonstrated apoptotic cells in the splenic red pulp of the PK‐deficient patient. The expression of 7A6 antigen was detected in cells isolated from spleen and in cells cultured in vitro, but only in those cells that were positive for glycophorin A. These results provide evidence that the metabolic disturbances in PK deficiency affect not only the survival of red cells but also the maturation of erythroid progenitors, which results in premature cell death, i.e., apoptosis. Am. J. Hematol. 74:68–72, 2003. © 2003 Wiley‐Liss, Inc.
Immune thrombocytopenic purpura associated with Brucella and Toxoplasma infections
Authors: Gürkan Emel , Başlamişli Fikri , Güvenç Birol , Bozkurt Berna , Ünsal Çağatay 
Published: August 2003

AbstractBacterial and protozoal infections can cause thrombocytopenia and may mimic idiopathic thrombocytopenic purpura (ITP). Brucella species and Toxoplasma are among the infectious agents with protean clinical manifestations which may induce immune thrombocytopenia. In rare cases, thrombocytopenia can be severe and may result bleeding into the skin and from mucosal sites. Prompt recognition of this complication and aggressive therapy are essential, since the mortality associated with bleeding into the central nervous system is high. We report two patients with complaints of severe epistaxis and thrombocytopenia associated with brucellosis and toxoplasmosis. Thrombocytopenic purpura in these cases responded well to the high‐dose corticosteroid treatment with platelet recovery within 2–3 days. For cases with infection‐induced immune thrombocytopenic purpura, short‐term high‐dose corticosteroids may be applied as an urgent therapy without worsening of the clinical condition. Am. J. Hematol. 74:52–54, 2003. © 2003 Wiley‐Liss, Inc.
Localization of the iron transport proteins mobilferrin and DMT‐1 in the duodenum: The surprising role of mucin
Authors: Simovich Marcia , Hainsworth Lucille N. , Fields P.A. , Umbreit Jay N. , Conrad Marcel E. 
Published: August 2003

AbstractThere are two pathways for inorganic iron uptake in the intestine, the ferric pathway, mediated by the key protein mobilferrin, and the ferrous pathway, mediated by DMT‐1. Previous studies reported that the amount of DMT‐1 increased in the intestinal mucosa in iron deficiency and the increase was seen in the apical portion of the villus of the duodenal mucosa. Mobilferrin did not quantitatively increase but became localized at the cell membrane. However, studies on fresh tissue have not previously been performed and the localization to the microvillae has not been demonstrated. In order to more definitively localize these proteins immunofluorescent and electron microscopic studies were undertaken. Samples were also subjected to biochemical analysis and Western analysis. In iron‐deficient animals both DMT‐1 and Mobilferrin were concentrated in the apical surface of the villae. Electron microscopy revealed that the majority of this increase in the amount of these proteins near the luminal surface was due to increased binding of the proteins to mucin in vesicles near the surface. A significant portion of the iron transport proteins was localized in the goblet cells and outside the cell in the luminal mucin, as demonstrated by immunofluorescence, electron microscopy, and isolation of the mucin by cesium chloride gradient centrifugation and Western analysis. A new model for the transport of metal ions was suggested. The metal transport proteins travel from vesicles inside the cell out to the lumen mucin. This increases the surface area and allows a greater portion of the lumen contents to be exposed to the binding proteins. Once the metal is bound to the externalized protein it is internalized into the cell. This explains many of the unique properties of the iron‐binding proteins and suggests that it may be a more general model for the absorption of other nutrients. Am. J. Hematol. 74:32–45, 2003. © 2003 Wiley‐Liss, Inc.
Interpersonal violence between 18th century Native Americans and Europeans in Ohio
Authors: Williamson Matthew A. , Johnston Cheryl A. , Symes Steven A. , Schultz John J. 
Published: August 2003

AbstractDuring the winter of 1778–1779, a garrison of 176 individuals lived within the walls of a Revolutionary era stronghold named Ft. Laurens on the banks of the Tuscarawas River, near the present‐day town of Bolivar, Ohio. At least 21 individuals were buried in the fort's cemetery during its occupation, 13 of whom were supposedly killed and scalped by Native Americans while gathering firewood and foraging horses. The purpose of this study is to build on previous work by Sciulli and Gramly ([1989] Am J. Phys. Anthropol. 80:11–24) by adding a more detailed analysis of the traumatic lesions, in order to better understand what happened to the victims. Lesions were analyzed based on type, location, and dimensions, as well as their overall pattern on the skeleton. Results indicate that multiple blows to the cranium were common. Out of 12 observable crania, the order of blows could be determined in only one case. Eleven of 12 of the observable crania from ambush victims and four of the seven nonambush victims exhibited lesions consistent with scalping. Evidence of postcranial trauma was noted on four individuals: one was an ambush victim, and the other three were killed at other times. No evidence of gunshot wounds was found. Am J Phys Anthropol, 2003. © 2003 Wiley‐Liss, Inc.
Applying forest restoration principles to coral reef rehabilitation
Authors: Epstein N. , Bak R.P.M. , Rinkevich B. 
Published: August 2003

AbstractForest restoration through silviculture (gardening) programs revives productivity, biodiversity, and stability. As in silviculture approaches, the coral ‘gardening’ strategy is based on a two‐step protocol.The first step deals with the establishment ofin situand/orex situcoral nurseries in which corals are farmed (originating from two types of source material: asexual [ramets, nubbins], and sexual [planula larvae, spat] recruits).The second is the reef rehabilitation step, where maricultured colonies are transplanted into degraded sites.We compare here the rationale of forest restoration to coral reef ecosystem restoration by evaluating major key criteria. As in silviculture programs, a sustainable mariculture operation that focuses on the prime structural component of the reef (‘gardening’ with corals) may promote the persistence of threatened coral populations, as well as that of other reef taxa, thus maintaining genetic diversity. In chronically degrading reef sites this may facilitate a halt in biodiversity depletion.Within the current theoretical framework of ecosystem restoration, the recovery of biodiversity indices is considered a core element since a rich species diversity provides higher ecosystem resilience to disturbances.The gardening measure may also be implemented worldwide, eliminating the need to extract existing colonies for transplantation operations. At degraded reef sites, the coral gardening strategy can assist in managing human and non‐human stakeholders' requirements as is done in forest management.Copyright © 2003 John Wiley & Sons, Ltd.