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1Microwave Synthesis of Large Few-Layer Graphene Sheets in Aqueous Solution of Ammonia显示文摘Few-layer graphene (FLG) sheets with sizes exceeding several micrometers have been synthesized by exfoliation of expanded graphite in aqueous solution of ammonia under microwave irradiation, with an overall yield approaching 8 wt.%. Transmission electron microscopy (in bright-field and dark-field modes) together with electron diffraction patterns and atomic force microscopy confirmed that this graphene material consisted mostly of mono-, bi- or few-layer graphene (less than ten layers). The high degree of surface reduction was confirmed by X-ray photoelectron and infrared spectroscopies. In addition, the high stability of the FLG in the liquid medium facilitates the deposition of the graphene material onto several substrates via low-cost solution-phase processing techniques, opening the way to subsequent applications of the material.Izabela Janowska Kambiz Chizari Ovidiu Ersen Spyridon Zafeiratos Driss Soubane Victor Da Costa Virginie Speisser Christine Boeglin Matthieu Houllé Dominique Bégin Dominique Plee Marc-Jacques Ledoux Cuong Pham-Huu 2010Nano Research2010,3,2:22
2Pseudolymphoma (reactive lymphoid hyperplasia) of the liver:A clinical challenge显示文摘Reactive lymphoid hyperplasia(RLH), also known as pseudolymphoma or nodular lymphoid lesion of the liver is an extremely rare condition, and only 51 hepatic RLH cases have been described in the literature since the first case was described in 1981. The majority of these cases were asymptomatic and incidentally found through radiological imaging. The precise etiology of hepatic RLH is still unknown, but relative high prevalence of autoimmune disorder in these cases suggests an immune-based liver disorder. Imaging features of hepatic RLH often suggest malignant lesions such as hepatocellular carcinoma and cholangiocarcinoma. In this report, we discuss two cases of hepatic RLH in patients with autoimmune hepatitis. We also present pathologic and magnetic resonance imaging findings, including one case utilizing a hepatocellular contrast agent, Eovist. Definitive diagnosis of hepatic RLH often requires surgical excision.Yong Kyong Kwon Reena C Jha Kambiz Etesami Thomas M Fishbein Metin Ozdemirli Chirag S Desai 2015World Journal of Hepatology2015,7,26:8
3质子重离子肿瘤放疗的临床注册试验初步报告显示文摘目的探讨IONTRIS粒子放疗设备临床应用的安全性和有效性。方法2014年6月至2014年8月间共有35例肿瘤患者入组,其中男性31例,女性4例:年龄36~80岁,中位年龄69岁。头颈肿瘤10例(均为手术后复发),胸部肿瘤4例,原发性肝癌1例,腹膜后肉瘤术后复发1例.前列腺癌19例。碳离子照射剂量为2.74—10GyE/次,质子照射剂量为2—5.5GyE/次,5次/周。放疗前对每个放射野进行水箱剂量验证。结果碳离子照射22例,质子照射13例。放疗后1年,35例患者全部生存。在16例头颈部、胸部和腹盆腔肿瘤患者中,完全缓解2例,部分缓解1例,疾病稳定12例,疾病进展1例,1年无进展生存率为93.8%(15/16)。19例前列腺癌患者的1年无生化复发生存率为100%。35例患者对粒子放疗的耐受性良好,放疗期间的美国东部肿瘤协作组评分和体重无明显改变。25例(71.4%)患者发生了与粒子放疗相关的急性不良事件(AE)33例次,均为1级.在放疗1年时急性AE全部消失。有6例(17.1%)患者在放疗后1年发生后期AE6例次,全部为1级。结论采用IONTRIS设备治疗肿瘤患者安全、有效。陆嘉德 叶明 郭小毛 傅深 Moyers F. Michael 章青 茅静芳 孔琳 HSI Wen Chien Shahnazi Kambiz 赵静芳 章真 马秀梅 来松涛 张晓萌 麻宁一 高云生 蔡昕 管西寅 张军华 吴斌 程竞仪 盛尹祥子 任炜 赵俊 孙力宁 蒋国梁 2018中华肿瘤杂志2018,40,1:7
4Effect of canopy gap size and ecological factors on species diversity and beech seedlings in managed beech stands in Hyrcanian forests显示文摘We studied the species diversity of the herb layer and ecological factors in harvest-created gaps in beech stands under a single-tree selection system in Northern Iran. To determine diversity, the number of beech seedlings, and other ecological factors, 16 gaps were selected and subplots of 5 m2 were positioned at the centre and at the cardinal points of each gap. Species richness and Simpson diversity index increased with increasing gap area as did numbers of seedlings. With increasing humus layer thickness, species richness declined but the Hill evenness index increased. Species richness increased with increasing light availability. There was no relationship between crown radii of beech trees and diversity indices. Correlations between environmental factors and numbers ofindividuals of some species in the herb layer were not significant except in a few cases. The results help explain the effects of man-made gaps on the dynamics of managed beech stands and this benefits evaluation of silvicultural operating plans.Kambiz Abrari Vajari Hamid Jalilvand Mohammad Reza Pourmajidian Kambiz Espahbodi Alireza Moshki 2012Journal of Forestry Research2012,23,2:6
5Improving the hydrodynamic performance of the SUBOFF bare hull model: a CFD approach显示文摘The main aims of this study are to investigate the hydrodynamic performance of an autonomous underwater vehicle(AUV),calculate its hydrodynamic coefficients,and consider the flow characteristics of underwater bodies.In addition,three important parts of the SUBOFF bare hull,namely the main body,nose,and tail,are modified and redesigned to improve its hydrodynamic performance.A three-dimensional(3D)simulation is carried out using the computational fluid dynamics(CFD)method.To simulate turbulence,the k-ωshear stress transport(SST)model is employed,due to its good prediction capability at reasonable computational cost.Considering the effects of the length-to-diameter ratio(LTDR)and the nose and tail shapes on the hydrodynamic coefficients,it is concluded that a hull shape with bullet nose and sharp tail with LTDR equal to 7.14 performs better than the SUBOFF model.The final proposed model shows lower drag by about 14.9%at u=1.5 m·s^-1.Moreover,it produces 8 times more lift than the SUBOFF model at u=6.1 m·s^-1.These effects are due to the attachment of the fluid flow at the tail area of the hull,which weakens the wake region.Kambiz Divsalar 2020Acta Mechanica Sinica2020,36,1:6
6点扫描质子束治疗机头的蒙特卡罗模拟和验证显示文摘目的利用蒙特卡罗程序模拟点扫描质子束治疗机头,建立精准的质子束流蒙特卡罗模拟计算模型。方法利用蒙特卡罗程序FLUKA,结合上海市质子重离子医院治疗机头几何结构,建立点扫描质子束治疗机头的蒙特卡罗模型。通过对不同能量下水中积分深度剂量分布,等中心点处空气中束斑大小的测量和模拟,建立精准的模拟模型。利用该模型模拟质子束扩展布拉格峰,并与对应治疗计划系统(treatment planning system,TPS)计算结果进行比较分析。结果对于射程末端90%积分深度剂量值,各能量下模拟和测量的偏差均不高于0.5 mm。而对于80%至20%末端跌落,各能量质子的模拟和测量的偏差在0.1 mm以内。质子束流束斑大小的模拟与测量结果偏差最大为0.45 mm。对扩展布拉格峰的剂量验证的模拟与TPS计算结果进行对比,γ分析通过率高于90%(2 mm,2%标准)。结论利用蒙特卡罗程序FLUKA可以建立点扫描质子治疗机头模型,该模型满足临床要求,可以精确地模拟点扫描质子束的输运。该模型通过测量验证,可以作为剂量验证工具,评估临床治疗计划,能够减少剂量验证所需的束流时间,从而增加患者治疗数量。盛尹祥子 Kambiz Shanazi 王巍伟 黄志杰 Nickii Schlegel 张俊昱 孙家耀 赵静芳 2019中华放射医学与防护杂志2019,39,8:4
7质子和碳离子治疗中CT值与相对阻止本领转换曲线的测量显示文摘目的 利用计算机断层扫描设备(CT)及质子重离子装置测量组织等效模体CT值与其对应的相对阻止本领转换曲线。方法 CT值与粒子阻止本领转换曲线在一定程度上决定了剂量计算的准确性。利用12个组织等效模体材料,经计算机断层扫描,获得其对应CT值,再利用质子重离子射线装置的质子、碳离子束流测量这些模体的相对阻止本领,从而获得CT值与质子、碳离子相对阻止本领转换曲线。结果 除肺等效模体以外,其他组织等效模体利用质子和碳离子束流测量得到的相对阻止本领之间的差异≤0.64%。结论 针对质子和碳离子束流,分别建立了基于等效模体测量的CT值-相对阻止本领转换曲线。盛尹祥子 王巍伟 黄志杰 赵静芳 Wen Chien Hsi Kambiz Shahnazi 2017中华放射医学与防护杂志2017,37,9:4
8竖直热壁冷却下降液膜瞬变传热及相界面波动显示文摘采用数值方法对恒热流密度竖直热壁表面自由下降液膜冷却流动过程进行瞬态研究,建立了简化为二维问题的物理模型和数学模型,选用RNG k-ε模型求解汽液两相湍流流动,基于VOF多相流模型结合自编程用户定义函数求解相变过程中的传热传质。得到了不同因素影响下,冷却降膜厚度在热壁不同位置的分布规律。结果显示,冷却降膜的流动过程中,其表面存在不同程度及类型的波动。热扰动会降低液膜相界面流动稳定性,提高液膜流量能够抑制液膜表面波动,两种影响因素对于液膜的流动稳定性是相互抑制的。核态沸腾发生时,液膜内汽泡的运动、变化会对液膜相界面波动产生显著影响。瞬态计算结果显示,不同工况下,降膜冷却传热过程中表面传热系数具有相同的变化趋势。液膜的热稳定性受到入口液流量及壁面热流密度的耦合影响。根据汽液两相流动及传热传质特性,分析了发生以上现象的原因。黄娜 周云龙 李洪伟 高聚 Kambiz Vafai 2017中国电机工程学报2017,37,6:4
9Priority of Factors Affected on Customer's Satisfaction in the E-Banking by Using Kano Model and Analytical Hierarchy Process: A Case of Iranian Commercial Bank显示文摘Younos Vakil Alroaia Mohammad Hemati Kambiz Abdi 2011Journal of Modern Accounting and Auditing2011,7,10:3
10EBT3和EDR2胶片对扫描束碳离子剂量的响应研究显示文摘目的 研究EBT3和EDR2胶片对于不同传能线密度和剂量碳离子响应。方法 EBT3和EDR2胶片采用两种方法进行光密度-剂量校准:一是将胶片放置在固体水与束流垂直测量深度,每张胶片接受同能量不同剂量碳离子照射;二是将多张完整胶片放置与束流垂直固体水不同深度,采用碳离子单次照射,在胶片不同区域形成不同物理剂量校准野。结果 在测量范围内,EBT3胶片光密度-剂量校准曲线(下称校准曲线)呈双曲线型,不同传能线密度校准曲线间最大差异为±17%;而EDR2校准曲线呈直线形,不同传能线密度间差异为±27.4%;两种胶片剂量响应均受碳离子在胶片测量深度传能线密度影响,传能线密度越大,胶片光密度响应越低;EBT3胶片灵敏度与剂量呈反比,但EDR2胶片灵敏度则与剂量无关。结论 EBT3胶片响应受传能线密度和剂量双重影响,限制了其在碳离子剂量测量方面的应用。EDR2胶片响应虽受传能线密度影响更大,但受单能碳离子照射时,由于其灵敏度与剂量无关,可用于单能碳离子剂量测量。王巍伟 盛尹祥子 黄志杰 Kambiz Shahnazi 2018中华放射医学与防护杂志2018,38,9:3
11质子重离子治疗靠近消化道肝癌的剂量学研究显示文摘目的 研究使用质子重离子放疗(离子放疗)治疗近消化道肝癌相对光子放疗的剂量学的优势。方法 选取10例肿块紧邻消化道器官放疗患者。治疗处方为用质子照射计划靶区1(PTV-1)50 Gy (RBE)分25次,然后用碳离子照射计划靶区2(PTV-2)15 Gy (RBE)分5次。采用相同数据和处方制定光子同步加量计划,危及器官限值参照RTOG1201。所有计划在满足危及器官限值前提下进行剂量评估。结果 光子计划PTV-1的95%处方剂量线覆盖V95略好于离子计划[(97.15±4.27)%:(96.25±6.69)%,P=0.049],光子计划PTV-2的V95与离子计划相近[(95.12±3.49)%:(94.60±6.22)%,P=0.277]。离子计划受照组织(Body-PTV-1)积分剂量仅是光子计划的39.9%,肝-GTV平均剂量仅为光子计划的81.8%,胃和十二指肠低剂量照射体积显著低于光子计划。结论 肝-GTV受量是制约放疗靶区总剂量提升的主要因素;当肝内GTV较大时离子相比光子能维持相近靶区覆盖同时显著降低肝-GTV受量。王巍伟 孙家耀 王征 盛尹祥子 蒋国梁 Kambiz Shahnazi 2018中华放射肿瘤学杂志2018,27,11:3
12Fischer-Tropsch Reaction Kinetics of Cobalt Catalyst in Supercritical Phase显示文摘在超级批评阶段状况下面的 Fischer-Tropsch 被检验在一连续并且由采用钴催化剂的一个高压的固定床反应堆(Co-Ru/|?-Al2O3) 。在超级批评液体 n 己包含 Fischer-Tropsch 动力学的一个积分反应器模型被用来描述全面表演。根据 Langmuir-Hinshelwood-Hougen-Watson (LHHW ) 模型,反应速率常数在超级临界情况下面为公司变换的速率公式被获得到 CH4 形成。给词调音:Fischer-Tropsch;超级批评阶段;n 己;动力学;Abdullah Irankhah Ali Haghtalab Ebrahim Vasheghani Farahani Kambiz Sadaghianizadeh 2007Journal of Natural Gas Chemistry2007,16,2:2
13Some Ecological Properties of Pistacia atlantica Desf. in Khojir National Park of Iran显示文摘Khojir national park is one of the oldest protected areas in Iran that is greatly considerable in terms of biodiversity and ecological values.Pistachio(Pistacia atlantica Desf.) communities,which create some woodland in this park,are unique because they grow tolerantly in a dry land,in the vicinity of Tehran capital.This research is about some ecological properties of Pistachio woodlands.The dominant community of the area is Pistacia-Amygdalus lycioides.The density of Pistacia is 86 per hectare.The density of Pistachio trees was greater in the higher elevation than in the lower one.In addition,the collar diameter and the height of trees in the higher class were less.The average density of Pistacia in plots in northern slopes was significantly more than southern slopes(at 5% level),but the average collar diameter of them were more on the southern aspect.The distribution,diameter and height of pistachio trees were not significantly related to the percentage of slope.Among the soil variables,the saturated water percentage(SP),N(total nitrogen) and texture of soil were effective factors which played significant role in ordination of plots containing pistachio.Considering the important role of P.atlantica forest stands in soil and water conservation in Iran,we should attach more importance to their protection and conservation,as well as activities such as road and dam construction,and garden establishment in such unique ecosystems.Kambiz Taheri Abkenar Ali Salehi Jalal Bagheri Hooman Ravanbakhsh 2013应用与环境生物学报2013,19,3:2
14Sperm allocation strategies in a sperm heteromorphic insect显示文摘Theories predict that in polyandrous species,the focal male should increase sperm allocation per mate in the presence of rivals to gain greater share of paternity,but in the presence of additional mates,he should reduce sperm allocation per mate to save sperm for insemination of more mates.However,empirical findings are often inconsistent and reasons behind are unclear.Furthermore,many studies use copulation duration as an estimate of the number of sperm transferred.Yet,empirical evidence for such assumption is largely lacking.Here,we used a sperm heteromorphic insect Ephestia kuehniella whose males produce two types of sperm,eupyrenes(fertile)and apyrenes(nonfertile),to test these postulations.We allowed focal males to detect chemical and acoustic but no tactile cues from rivals or additional mates both before and during mating and measured copulation duration and sperm allocation in successive copulations.We demonstrate that males transfer significantly more eupyrenes per mate in the presence of rivals and that the sperm allocation pattern persists in successive copulations under this condition.However,males do not adjust apyrene allocation in response to rivals probably because apyrenes play a relatively minor role in male reproductive success.Contrary to a previous study,focal males do not respond to additional mates most likely due to the lack of tactile cues in the present study.We reveal that sperm allocation is not a function of copulation duration in this insect for spermatophore formation and delivery occupy most of copulation duration and sperm transfer is complete near the end of copulation.Kambiz ESFANDI Xiong Z.HE Qiao WANG 2020Current Zoology2020,66,3:2
15胸腺肿瘤质子碳离子放疗的剂量对比研究及短期疗效观察显示文摘目的对比光子和质子碳离子(粒子)放疗计划在有可见胸腺肿瘤患者中危及器官受量的差异,并观察粒子射束放射治疗胸腺肿瘤的近期疗效和不良反应。方法回顾性分析19例于2015年9月至2018年8月接受非姑息性粒子放疗、至少经过1次随访的胸腺肿瘤患者。肿瘤分期涵盖Ⅰ~ⅣB期,其中Ⅲ~ⅣB期15例。所有患者均经病理学证实,包括10例胸腺瘤,6例胸腺癌和3例胸腺神经内分泌肿瘤。对13例有可见肿瘤的患者进行光子调强、质子和碳离子笔形束扫描放疗计划对比,光子和质子的处方为66 GyE/33次,碳离子为66 GyE/22次。未经手术的5例初治和7例术后肉眼肿瘤残留(R2切除)患者,接受根治性放疗:质子44.0~48.4 GyE/20~22次加碳离子推量21.0~23.1 GyE/7次;1例完整切除(R0)术后患者,质子45 GyE/25次;5例术后显微镜下残留(R1切除)者,质子60.0~61.6 GyE/28~30次;1例术后放疗后复发者,碳离子60 GyE/20次。结果中位随访时间19.0(2.4~42.9)个月。13例可见肿瘤患者肿块最大径中位数5.7(2.7~12.8)cm;剂量对比研究显示粒子计划可显著降低脊髓最大剂量、肺、心、食管等危及器官的平均剂量、以及受照区域积分剂量,仅约为光子计划的25%~65%。除1例心肌梗死(4级晚期反应)可能与放疗相关外,未发现其他≥3级放疗相关不良反应。所有患者无局部复发,4例Ⅲ~ⅣB期患者在放疗开始后6.1~22.8个月出现区域淋巴结、肺、胸膜、颅底、骨和肝等部位转移。2年局部控制率和总生存率均为100%,无疾病进展生存率和无远处转移生存率均为64.6%。结论对胸腺肿瘤的剂量对比分析显示,质子碳离子放疗的正常组织受量仅为光子计划的25%~65%;临床结果提示短期疗效好、不良反应轻微。陈剑 麻宁一 卢艳 Kambiz Shahnazi 赵静芳 陆嘉德 蒋国梁 茅静芳 2020中华放射医学与防护杂志2020,40,3:2
16A polymer electro-optic modulator with ultra wide-band and low driving voltage显示文摘In this paper, a polymer electro-optic modulator is designed and simulated using the full vectorial finite element method. First order edge elements are used in finite element implementation, and the finite element technique is used to obtain modulator response thoroughly. From the numerical analysis, frequency dispersions of modulator's important parameters, such as microwave effective index nm , microwave characteristic impedance ZC and microwave loss a, are extracted. Our design exhibits electrical bandwidth of 260 GHz and drive voltage of about 2.8 V.cm in this frequency.Kambiz Abedi Habib Vahidi 2011Optoelectronics Letters2011,7,6:2
17THE EVOLUTION OF FIELD DEPLOYABLE fNIR SPECTROSCOPY FROM BENCH TO CLINICAL SETTINGS显示文摘In the late 1980s and early 1990s,Dr.Britton Chance and his colleagues,using picosecond-long laser pulses,spearheaded the development of time-resolved spectroscopy techniques in an effort to obtain quantitative information about the optical characteristics of the tissue.These efforts by Chance and colleagues expedited the translation of near-infrared spectroscopy(NIRS)-based techniques into a neuroimaging modality for various cognitive studies.Beginning in the early 2000s,Dr.Britton Chance guided and steered the collaboration with the Optical Brain Imaging team at Drexel University toward the development and application of afield deployable continuous wave functional near-infrared spectroscopy(fNIR)system as a means to monitor cognitive functions,particularly during attention and working memory tasks as well as for complex tasks such as war games and air tra±c control scenarios performed by healthy volunteers under operational conditions.Further,these collaborative efforts led to various clinical applications,including traumatic brain injury,depth of anesthesia monitoring,pediatric pain assessment,and braincomputer interface in neurology.In this paper,we introduce how these collaborative studies have made fNIR an excellent candidate for specified clinical and research applications,including repeated cortical neuroimaging,bedside or home monitoring,the elicitation of a positive effect,and protocols requiring ecological validity.This paper represents a token of our gratitude to Dr.Britton Chance for his influence and leadership.Through this manuscript we show our appreciation by contributing to his commemoration and through our work we will strive to advance thefield of optical brain imaging and promote his legacy.KURTULUS IZZETOGLU HASAN AYAZ ANNA MERZAGORA MELTEM IZZETOGLU PATRICIA ASHEWOKIS SCOTT CBUNCE KAMBIZ POURREZAEI ARYE ROSEN BANU ONARAL 2011Journal of Innovative Optical Health Sciences2011,4,3:2
18碳离子放射治疗泪囊泪腺肿瘤的剂量学研究显示文摘目的比较碳离子治疗泪囊泪腺肿瘤相对于光子放疗的剂量学差异.方法利用上海市质子重粒子医院治疗的10例术后残留的泪囊腺肿瘤患者CT图像,重新制定碳离子计划,光子容积调强计划(VMAT)与固定野光子调强计划(IMRT),所有患者处方均为给予临床靶区54Gy相对生物学效能(RBE)/18次,并给予临床加量靶区同步加量至63Gy(RBE)/18次.在计划靶区覆盖相似情况下,比较正常组织受量.结果在计划靶区覆盖差异无统计学意义的情况下,与光子VMAT和与IMRT相比,碳离子计划患侧与健侧的眼球平均剂量、视神经近似最大剂量(D2%)与平均剂量均降低(患侧:t=7.35、3.79、4.66、8.48、2.52、2.76,P<0.05;健侧:t=3.87、10.49、9.16、4.43、6.53、5.12,P<0.05);脑组织平均剂量由(5.65±3.58)和(5.76±2.09)Gy(RBE)降至(0.81±0.90)Gy(RBE),差异具有统计学意义(t=6.76、17.33,P<0.05).结论与光子VMAT与IMRT相比,碳离子计划能有效降低泪囊泪腺肿瘤周围视觉器官受照体积与剂量,具有降低放疗不良反应的潜在优势.邢影 王巍伟 Kambiz Shahnazi 胡微煦 胡集祎 高晶 孔琳 陆嘉德 2019中华放射医学与防护杂志2019,39,9:2
19Trend of blood lactate level in acute aluminum phosphide poisoning显示文摘BACKGROUND: Aluminum phosphide(Al P) poisoning is common in the developing countries. There is no specifi c antidote for the treatment of acute Al P poisoning. Early diagnosis of poisoning and outcome predictors may facilitate treatment decisions. The objective of this study was to determine the trend of blood lactate level in acute Al P poisoning to evaluate its role as a prognostic factor.METHODS: This was a prospective study on acute Al P intoxicated patients during one year. Demographic data, clinical and laboratory data on admission, and outcome were recorded in a selfmade questionnaire. Blood lactate levels were analyzed every two hours for 24 hours.RESULTS: Thirty-nine(27 male, 12 female) patients were included in the study. The mortality rate was 38.5%. The mean blood pressure, pulse rate, blood p H and serum bicarbonate level were significantly different between the survivors and non-survivors groups. Blood lactate level was signifi cantly higher in the non-survivors group during 8 to 16 hours post ingestion.CONCLUSION: Blood lactate level could be used as an index of severity of acute Al P poisoning.Peyman Erfantalab Kambiz Soltaninejad Shahin Shadnia Nasim Zamani Hossein Hassanian-Moghaddam Arezou Mahdavinejad Behrooz Hashemi Damaneh 2017World Journal of Emergency Medicine2017,8,2:2
20Decision support frame-work for risk management on sea ports and terminals using fuzzy set theory and eviden-tial reasoning approach显示文摘Kambiz Mokhtari Ju n Ren Charles Roberts Jin Wang 0,,:1
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