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A functionalized activated carbon adsorbent prepared from waste amidoxime resin by modifying with H_(3)PO_(4) and ZnCl_(2) and its excellent Cr(Ⅵ)adsorption

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 585-598页

作者： Chunlin He Yun Liu Mingwei Qi Zunzhang Liu Yuezhou Wei Toyohisa fujita Guifang Wang Shaojian Ma Wenchao Yang School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China School of Nuclear Science and Technology University of South ChinaHengyang 421000China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of New Low-carbon Green Chemical Technology Education Department of Guangxi Zhuang Autonomous RegionNanning 530004China

With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, thereby endangering human health. Therefore, in this paper, a novel functionalized mesoporous adsorbent PPR-Z was synthesized from waste amidoxime resin for adsorbing Cr(Ⅵ). The waste amidoxime resin was first modified with H3PO4 and ZnCl_(2), and subsequently, it was carbonized through slow thermal decomposition. The static adsorption of PPR-Z conforms to the pseudo-second-order kinetic model and Langmuir isotherm, indicating that the Cr(Ⅵ) adsorption by PPR-Z is mostly chemical adsorption and exhibits single-layer adsorption. The saturated adsorption capacity of the adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the toxicity of Cr(Ⅵ) during adsorption. PPR-Z exhibited Cr(Ⅵ) selectivity in electroplating wastewater. The main mechanisms involved in the Cr(Ⅵ) adsorption are the chemical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-Z not only solves the problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realizes the concept of “treating waste with waste”.

关键词： waste amidoxime resin mesoporous adsorbent H_(3)PO_(4)and ZnCl_(2)processing Cr(VI)adsorption electroplating wastewater

Bi_(2)O_(3)/g-C_(3)N_(4)hollow core–shell Z-scheme heterojunction for photocatalytic uranium extraction

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Nano Research 2024年第7期17卷 5845-5855页

作者： Hao Fu Yuehua Pan Zhenyu Cai Yuxiang Deng Minchen Hou Yuezhou Wei Toyohisa fujita Shunyan Ning Youbin Wang Shaolong Zhang Xinpeng Wang School of Chemistry&Chemical Engineering Guangxi UniversityNanning 530004China School of Resources Environment and MaterialsGuangxi UniversityState Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresNanning 530004China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China School of Materials Sun Yat-sen UniversityShenzhen 518107China School of Nuclear Science and Technology University of South ChinaHengyang 421001China

Photocatalytic uranium extraction from radioactive nuclear wastewater and seawater is critical for promoting the sustainable advancement of nuclear industry,but the complexity of real-world environments,particularly the occurrence of anoxic and oxygen-enriched states,presents significant challenges to effective uranium ***,a layered hollow core–shell structure of Bi_(2)O_(3)/g-C_(3)N_(4)Z-scheme heterojunction photocatalyst has been designed and successfully applied for photocatalytic uranium extraction in both aerobic and oxygen-free conditions,and the extraction efficiency of uranium can reach 98.4%and 99.0%,***,the photocatalyst still has ultra-high extraction efficiency under the influence of pH,inorganic ions,and other *** exceptional capability for uranium extraction is on the one hand due to the distinctive hollow core–shell architecture,which furnishes an abundant quantity of active *** the other hand,benefiting from the suitable band gap structure brought by the construction of Z-scheme heterojunction,Bi_(2)O_(3)/g-C_(3)N_(4)exhibits current densities(1.00μA/cm^(2))that are 5.26 and 3.85 times greater than Bi_(2)O_(3)and g-C_(3)N_(4),respectively,and the directional migration mode of Z-scheme carriers significantly prolongs the lifetime of photogenerated charges(1.53 ns),which separately surpass the pure samples by factors of 5.10 and ***,the reaction mechanism and reaction process of photocatalytic uranium extraction are investigated in the presence and absence of oxygen,respectively.

关键词： Bi_(2)O_(3)/g-C_(3)N_(4) Z-scheme photocatalytic uranium extraction

Anaplastic Lymphoma Kinase (ALK) and p53 Are Potentially Useful Markers to Distinguish Inflammatory Myofibroblastic Tumor

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Open Journal of Urology 2013年第2期3卷 71-74页

作者： Shinji Kurosaka Kazumasa Matsumoto Akira Irie Takahiro Hirayama Morihiro Nishi tetsuo fujita Takefumi Satoh Yuichi Sato Masatsugu Iwamura Kazunari Yoshida Department of Molecular Diagnostics School of Allied Health Sciences Kitasato University Tokyo Japan Department of Urology School of Medicine Kitasato University Tokyo Japan

Aims: Inflammatory myofibroblastic tumor (IMT) of the urinary bladder is a clinically and histologically uncommon benign tumor that can be easily mistaken for a malignant neoplasm. We sought to determine whether immunohistochemical staining would be evaluated IMT of the urinary bladder. We have also shown the literatures that imminohistochemical staining of IMT was investigated to distinguish malignant lesions using PubMed data base. Methods: Immunohistochemical staining, including anaplastic lymphoma kinase (ALK), p53, cytokeratin, vimentin, desmin, alpha-smooth muscle actin, myoglobin, smooth muscle myosin and S100, was carried out on serial sections from archival specimens of three patients who underwent transurethral resection and partial cystectomy. Results: Immunohistchemical staining in all patients was positive for ALK and weak positive for p53 protein. In the literatures, positive rates of ALK and p53 inthe IMT of the urinary bladder were 60.9% and 53.1%, respectively. Sarcoma and carcinosarcoma were shown in the pathological specimens with negative ALK and strongly positive p53 inthe same data base. Conclusions: Both ALK and p53 were potentially useful protein markers to distinguish between IMT and sarcoma. However, this study was small sample size. Further study was warranted an investigation of the availability of these proteins in IMT.

关键词： Inflammatory Myofibroblastic Tumor Immunohistochemistry Bladder Cancer Anaplastic Lymphoma Kinase p53

Recovery of serum testosterone following neoadjuvant and adjuvant androgen deprivation therapy in men treated with prostate brachytherapy

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World Journal of Radiology 2015年第12期7卷 494-500页

作者： Hideyasu Tsumura Takefumi Satoh Hiromichi Ishiyama Shuhei Hirano Kenichi Tabata Shinji Kurosaka Kazumasa Matsumoto tetsuo fujita Masashi Kitano Shiro Baba Kazushige Hayakawa Masatsugu Iwamura Department of Urology Kitasato University School of Medicine Department of Radiation Oncology Kitasato University School of Medicine

AIM: To investigate the time course of testosterone(T) recovery after cessation of androgen deprivation therapy(ADT) in patients treated with brachytherapy. METHODS: One-hundred and seventy-four patients treated between June 1999 and February 2009 were studied. Patients were divided into a short-term usage group(≤ 12 mo, n = 91) and a long-term usage group(≥ 36 mo, n = 83) according to the duration of gonadotropin-releasing hormone agonist therapy. Median follow-up was 29 mo in the short-term group and was 60 mo in the long-term ***: Cumulative incidence rates of T recovery to normal and supracastrate levels at 24 mo after cessationwere 28.8% and 74.6%, respectively, in the long-term usage group, whereas these values were 96.4% and 98.8% in the short-term usage group. T recovery to normal and supracastrate levels occurred significantly more rapidly in the short-term than in the long-term usage group(P < 0.001 and P < 0.001, respectively). Five years after cessation, 22.6% of patients maintained a castrate T level in the long-term usage group. On multivariate analysis, lower T levels(< 10 ng/d L) at cessation of ADT was significantly associated with prolonged T recovery to supracastrate levels in the longterm usage group(P = 0.002). CONCLUSION: Lower T levels at cessation of ADT were associated with prolonged T recovery in the longterm usage group. Five years after cessation of longterm ADT, approximately one-fifth of patients still had castrate T levels. When determining the therapeutic effect, especially biochemical control, we should consider this delay in T recovery.

关键词： Androgen deprivation Gonadotropinreleasing hormone agonist Prostate brachytherapy Prostate cancer Testosterone

Analyzing Disaster Mitigation Policies in Japan and China from an Eco-DRR Perspective:A Comparative Study of Shanghai and Tokyo

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Journal of Architectural Research and Development 2024年第1期8卷 14-19页

作者： Minghui Tang Naoko fujita Art and Design University of TsukubaTsukuba 3058577IbarakiJapan

Global climate change-induced natural disasters require international efforts and the adoption of Eco-Disaster Risk Reduction(Eco-DRR)policies for sustainable *** study examines the status of Eco-DRR in disaster prevention policies through word cloud analysis,providing insights for policymakers to enhance disaster prevention amid increasing climate-related *** and Japan prioritize soft aspects,while Shanghai and China emphasize engineering for flood prevention,revealing a gap in Eco-DRR *** these differing approaches,the shared focus on water-related disasters indicates a shift towards urban *** research should assess policy effectiveness and the impact of Eco-DRR on disaster risk reduction and ecosystem protection.

关键词： Disaster Policy Eco-DRR Word-cloud

Light is an Important Limiting Factor for the Vertical Distribution of the Largest Extant Benthic Foraminifer Cycloclypeus carpenteri

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Journal of Earth Science 2022年第6期33卷 1460-1468页

作者： Kazuhiko fujita Yoji Kanda Takashi Hosono Department of Physics and Earth Sciences University of the RyukyusOkinawa903-0213Japan Tropical Biosphere Research Center University of the RyukyusOkinawa903-0213Japan Japan Agency for Marine-Earth Science and Technology(JAMSTEC) Global Oceanographic Data Center(GODAC)Kanagawa236-0001Japan

Cycloclypeus carpenteri is the largest extant benthic foraminifer,dwelling in the deep euphotic zone(a water depth between 60 and 130 m)of the warm oligotrophic Indo-West *** foraminifer harbors diatom endosymbionts and the foraminifer-microalgal association acts like a *** verify that light is an important limiting factor controlling the vertical(depth)distribution of living Cycloclypeus holobionts,their physiological responses to light intensity were examined by short-term metabolic measurements and long-term *** oxygen production(OP)rates measured under different light levels using an oxygen microelectrode indicate that Cycloclypeus holobionts are daily net primary producers adapted to low light levels,with slight photoinhibition(reduced net OP rates relative to a light-saturated rate)over 100μmol photons m^(−2)s^(−1).Long-term growth increments of asexually reproduced juveniles incubated for two months at different light levels ranging from 0 to 100μmol photons m^(−2)s^(−1) show that Cycloclypeus holobionts are adapted to a low light level(∼5μmol photons m^(−2)s^(−1)),but can be acclimatized to a certain low light ranges(<50μmol photons m^(−2)s^(−1)).These experimental results confirm that light is an important environmental gradient affecting the vertical distribution of Cycloclypeus holobionts.

关键词： algal symbiosis diatom large benthic foraminifer oxygen production photosynthesis

Interactive Restoration of Three-Dimensional Implicit Surface with Irregular Parts

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 2111-2125页

作者： Jiayu Ren Yoshihisa fujita Susumu Nakata Graduate School of Information Science and Engineering Ritsumeikan UniversityShiga525-8577Japan College of Information Science and Engineering Ritsumeikan UniversityShiga525-8577Japan

Implicit surface generation based on the interpolation of surface points is one of the well-known modeling methods in the area of computer *** methods for the implicit surface reconstruction from surface points have been proposed on the basis of radial basis functions,a weighted sum of local functions,splines,wavelets,and combinations of ***,if the surface points contain errors or are sparsely distributed,irregular components,such as curvature-shaped redundant bulges and unexpectedly generated high-frequency components,are commonly *** paper presents a framework for restoring irregular components generated on and around *** are assumed to specify local masks that cover irregular components and parameters that determine the degree of *** algorithm in this paper removes the defects based on the user-specific masks and *** have shown that the proposed methods can effectively remove redundant protrusions and jaggy noise.

关键词： Shape modeling implicit surfaces interactive restoration

Broadly tunable lens-coupled nonlinear quantum cascade lasers in the sub-THz to THz frequency range

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Photonics Research 2022年第3期10卷 703-710页

作者： Kazuue fujita Shohei Hayashi Akio Ito Tatsuo Dougakiuchi Masahiro Hitaka Atsushi Nakanishi Central Research Laboratory Hamamatsu Photonics K.K.5000 HirakuchiHamakita WardHamamatsu 434-8601Japan

Room-temperature terahertz(THz)quantum cascade laser sources with intracavity difference-frequency nonlinear mixing are electrically pumped monolithic semiconductor laser sources operating in the 0.6–6 THz spectral *** report widely tunable,low-frequency THz quantum cascade laser sources using a lens-coupled Cherenkov waveguide *** on a watt-class high-power,λ∼13.7μm quantum cascade laser,the monolithic THz source is strongly coupled with a high-resistivity silicon lens,which causes a major increase in the THz coupling efficiency and demonstrates significant performance improvements.A room-temperature 1.5 THz device produces a 0.2 mW peak output power with a high-quality beam *** THz outcoupling efficiency using the lens-coupled scheme enabled the demonstration of a high-performance external-cavity semiconductor THz source that is tunable from 420 GHz to 2 *** external-cavity,lens-coupled device configuration can technically be assembled into a butterfly-style package for a thumb-sized,widely frequency tunable THz semiconductor source.

关键词： tunable waveguide pumped

Disseminated carcinomatosis of the bone marrow caused by granulocyte colony-stimulating factor:A case report and review of literature

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World Journal of Gastrointestinal Oncology 2022年第10期14卷 2077-2084页

作者： Kengo fujita Ayaka Okubo Toshitsugu Nakamura Nobumichi Takeuchi Department of Medical Oncology Ina Central HospitalNagano 396-8555Japan Department of Diagnostic Pathology Ina Central HospitalNagano 396-8555Japan

BACKGROUND Disseminated carcinomatosis of the bone marrow(DCBM)is a widespread metastasis with a hematologic disorder that is mainly caused by gastric *** it commonly occurs as a manifestation of recurrence long after curative treatment,the precise mechanism of relapse from dormant status remains *** colony-stimulating factor(G-CSF)can promote cancer progression and invasion in various ***,the potential of G-CSF to trigger recurrence from a cured malignancy has not been *** SUMMARY A 55-year-old Japanese woman was diagnosed with Ewing sarcoma localized on the fifth lumbar vertebrae 6 years after curative gastrectomy for T1 gastric *** palliative surgery to release nerve compression,pathological diagnosis of the resected specimen was followed by curative radiation and *** treatment,G-CSF was administered 32 times for severe neutropenia *** months after completing definitive treatment,she complained of severe back pain and was diagnosed as multiple bone metastases with DCBM from gastric *** palliative chemotherapy,she died of disseminated intravascular coagulation 13 d after the *** examination of the autopsied bone marrow confirmed a diffuse positive staining for the G-CSF receptor(G-CSFR)in the relapsed gastric cancer cell cytoplasm,whereas the primary lesion cancer cells showed negative staining for *** this case,G-CSF administration may have been the key trigger for the disseminated relapse of a dormant gastric *** administering G-CSF to cancer survivors,recurrence of a preceding cancer should be monitored even after curative treatment.

关键词： Disseminated bone marrow carcinomatosis Gastric cancer Granulocyte colony-stimulating factor Cancer survivor Immunostaining Case report