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self-strangulation induced penile partial amputation:A case report

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World Journal of Clinical Cases 2023年第22期11卷 5373-5381页

作者： A-Bu-Lai-ti Maimaitiming Ye-Li-su-Dan Mulati Ai-Re-ti Apizi Xiao-Dong Li Department of Urology The First Affiliated Hospital of Xinjiang Medical UniversityXinjiang Clinical Research Center for Genitourinary SystemUrumqi 830011Xinjiang Uygur Autonomous RegionChina

BACKGROUND Traumatic amputation of the penis is a rare surgical emergency,usually caused by self-mutilation,accidents,circumcision,assault and animal *** study aimed to summarize our treatment experience involving penile reconstruction in a rare case of a self-strangulation induced chronical penile partial *** sUMMARY A 22-year-old man presented with self-strangulation induced chronical penile partial amputation for 3 mo where the penile proximal part was 1 cm far from the *** methods included end-to-end anastomosis of the urethral mucosa,proximal anastomosis of the corpus cavernosum and tunica albuginea of the penis,anastomosis of the deep dorsal vein,dorsal artery,and superficial dorsal *** urinated smoothly after the catheter was removed on day 21.3 mo after the surgery,the patient's penile preliminary cosmetic appearance was satisfactory,with occasional morning *** penile sensation was preserved,yet erection hardness of the distal penis was not *** Complete preoperative assessment and prompt surgical intervention decreases loss of residual penile functions.

关键词： Amputation Reconstruction Body dysmorphic disorders Psychological treatment Case report

Feasibility of co-reduction roasting of a saprolitic laterite ore and waste red mud

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International Journal of Minerals,Metallurgy and Materials 2018年第6期25卷 591-597页

作者： Xiao-ping Wang ti-chang sun Jue Kou Zhao-chun Li Yu tian school of Civil and Resource Engineering University of Science and Technology Beijing

Large scale utilization is still an urgent problem for waste red mud with a high content of alkaline metal component in the *** ores especially the saprolitic laterite ore are one refractory nickel resource,the nickel and iron of which can be effectively recovered by direct reduction and magnetic *** metal salts were usually added to enhance reduction of laterite *** feasibility of co-reduction roasting of a saprolitic laterite ore and red mud was *** show that the red mud addition promoted the reduction of the saprolitic laterite ore and the iron ores in the red mud were co-reduced and *** adding 35wt%red mud,the nickel grade and recovery were 4.90wt%and 95.25wt%,and the corresponding iron grade and total recovery were 71.00wt%and 93.77wt%,*** X-ray diffraction（XRD）,scanning electron microscopy,and energy dispersive spectroscopy（sEM-EDs）analysis results revealed that red mud addition was helpful to increase the liquid phase and ferronickel grain *** chemical compositions＂Ca O and Na_2O＂in the red mud replaced Fe O to react with si O_2 and Mg si O_3 to form augite.

关键词： laterite ore red mud reduction roasting phase transformation

Ingredient Losses during Melting Binary Ni-ti shape Memory Alloys

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Journal of Materials science & Technology 2005年第4期21卷 484-488页

作者： s.K.sadrnezhaad s.Badakhshan Raz Center of Excellence for Advanced Processes of Production and shaping of Materials Department of Materials Science and Engineering Sharif University of Technology Tehran P.O. Box 11365-9466 IranCenter of Excellence for Advanced Processes of Production and Shaping of Materials Department of Materials Science and Engineering Sharif University of Technology Tehran P.O. Box 11365-9466 Iran

Losses of the alloying elements during vacuum induction melting of the binary Niti alloys were evaluated by visual observation and chemical analysis of the Niti melted specimens and the scalp formed on the internal surface of the crucible. The results indicated that the major sources of the losses were （a） evaporation of the metals, （b） formation of the Niti scalp and （c） the sprinkling drops splashed out of the melt due to the exothermic reactions occurring between Ni and ti to form the Niti parent phase. Quantitative evaluations were made for the metallic losses by holding the molten alloy for 0.5, 3, 5, 10 and 15 min at around 100℃ above the melting point inside the *** analysis showed that there existed an optimum holding time of 3 min during which the alloying elements were only dropped to a predictable limit. Microstructure, chemical composition, shape memory and mechanical properties of the cast metal ingots were determined to indicate the appropriate achievements with the specified 3 min optimum holding time.

关键词： shape memory alloy (sMA) Vacuum induction melting (VIM) Metallic loss

Factor analysis on the purity of magnesium titanate directly prepared from seashore titanomagnetite concentrate through direct reduction

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International Journal of Minerals,Metallurgy and Materials 2020年第11期27卷 1462-1470页

作者： Xiao-ping Wang Zhao-chun Li ti-chang sun Jue Kou Xiao-hui Li school of Mining and Coal Inner Mongolia University of Science and TechnologyBaotou 014010China China sinda Intellectual Property Limited Beijing 100033China school of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China

Magnesium titanate was prepared directly through external coal reduction of seashore titanomagnetite concentrate and magnesium oxide(MgO).The effects of roasting temperature and the type and dosage of reductants on the purity of generated magnesium titanate particles were systematically *** electron microscopy and energy-dispersive spectroscopy analyses were performed to characterize the magnesium titanate particles and observe their purity under different *** showed that the roasting temperature remarkably influenced the purity of magnesium *** 1200,1300,and 1400℃,some magnesium ferrite and magnesium aluminate spinel were dissolved in magnesium ***,as the roasting temperature increased to 1500℃,relatively pure magnesium titanate particles were generated because no magnesium ferrite was dissolved in *** type and dosage of the reductants also remarkably affected the purity of magnesium *** amount of fine metallic iron disseminated in the magnesium titanate particles obviously decreased when lignite was used as a reductant at a dosage of 70wt%.Thus,high-purity magnesium titanate particles *** a roasting temperature of 1500℃and with 70wt%lignite,the magnesium titanate product with a yield of 30.63%and an iron content of 3.01wt%was obtained through magnetic separation.

关键词： seashore titanomagnetite magnesium oxide direct reduction magnesium titanate

Phosphorus Loss from Dry sloping Lands of Three Gorges Reservoir Area, China

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Pedosphere 2013年第3期23卷 385-394页

作者： HU Zheng-Feng GAO Ming XIE De-ti WANG Zi-Fang College of Resources & Environment Southwest University Chongqing Municipal Environmental Protection Bureau

Eutrophication in the Three Gorges Reservoir has become a serious issue, and phosphorus (P) is the nutrient thought to be primarily responsible although there are few studies about P loss from the mostly sloping farmlands of the area. This work investigated the amounts and forms of P loss from 9 farmlands with the slopes of 4°, 9°, and 17° in a small watershed, Wangjiagou in Fuling District, Chongqing of China. The slope of the relationship between runoff and rainfall increased with field slope; i.e., there was a significant interaction between the effects of rainfall and field slope on water export. For sediment export by surface runoff, there was no interaction between field slope and rainfall, and the intercept of the relationship between rainfall and sediment loss was significantly different for the 3 slopes. The main P loss was from sediments, regardless of slope. In the runoff water, particulate P was the largest P fraction, and its loss was greatest from the steepest land and least from the flattest. The release of total P and available P from sediments followed the same trend. The P loss during May to July in Wangjiagou was more than 60% of the annual total.

关键词： agricultural production area erosion nutrient loss purple soil soil loss

study on the strength of cold-bonded high-phosphorus oolitic hematite-coal composite briquettes

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International Journal of Minerals,Metallurgy and Materials 2014年第5期21卷 423-430页

作者： Wen Yu ti-chang sun Zhen-zhen Liu Jue Kou Cheng-yan Xu The Key Laboratory of the Ministry of Education of China for High-Efficient Mining and safety of Metal Mines University of Science and Technology Beijing school of Civil and Environmental Engineering University of Science and Technology Beijing

Composite briquettes containing high-phosphorus oolitic hematite and coal were produced with a twin-roller briquette machine using sodium carboxymethyl cellulose, molasses, starch, sodium silicate, and bentonite as binders. The effect of these binders on the strength of the composite briquettes, including cold strength and high-temperature strength, was investigated by drop testing and compression testing. It was found the addition of Ca（OH）2 and Na2CO3 not only improved the reduction of iron oxides and promoted dephosphorization during the reduction-separation process but also provided strength to the composite briquettes during the briquetting process; a compressive strength of 152.8 N per briquette was obtained when no binders were used. On this basis, the addition of molasses, sodium silicate, starch, and ben- tonite improved the cold strength of the composite briquettes, and a maximum compressive strength of 404.6 N per briquette was obtained by using starch. When subjected to a thermal treatment at 1200~C, all of the composite briquettes suffered from a sharp decrease in compressive strength during the initial reduction process. This decrease in strength was related to an increase in porosity of the composite briquettes. X-ray diffraction （XRD） and scanning electron microscopy （sEM） analyses showed that the decrease in strength of the composite briquettes could be caused by four factors： decomposition of bonding materials, gasification of coal, transportation of byproduct gases in the composite briquettes, and thermal stress.

关键词： hematite briquetting binders compressive strength porosity direct reduction process-

Effects and mechanisms of fluorite on the co-reduction of blast furnace dust and seaside titanomagnetite

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International Journal of Minerals,Metallurgy and Materials 2017年第11期24卷 1201-1210页

作者： tian-yang Hu ti-chang sun Jue Kou Chao Geng Yong-qiang Zhao school of Civil and Resources Engineering University of Science and Technology Beijing Beijing 100083 China Key Laboratory of Ministry of Education of China for Efficient Mining and safety of Metal Mines Beijing 100083 China

The co-reduction roasting and grinding-magnetic separation of seaside titanomagnetite and blast furnace dust was investigated with and without fluorite addition at a reduction roasting temperature of 1250°C for 60 min, a grinding fineness of-43 μm accounting for 69.02 wt% of the total, and a low-intensity magnetic field strength of 151 kA/m. The mineral composition, microstructure, and state of the roasted products were analyzed, and the concentrations of CO and CO_2 were analyzed in the co-reduction roasting. Better results were achieved with a small fluorite dosage(≤4 wt%) in the process of co-reduction. In addition, F^- was found to reduce the melting point and viscosity of the slag phase because of the high content of aluminate and silicate minerals in the blast furnace dust. The low moisture content of the blast furnace dust and calcic minerals inhibited the hydrolysis of CaF_2 and the loss of F^-. Compared with the blast furnace dust from Chengdeng, the blast furnace dusts from Jiugang and Jinxin inhibited the diffusion of F-when used as reducing agents, leading to weaker effects of fluorite.

关键词： seaside titanomagnetite blast furnace dust co-reduction roasting fluorite mechanisms

Risk Factors for Mortality in Critically Ill Patients with Coagulation Abnormalities:A Retrospective Cohort study

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Current Medical science 2024年第5期44卷 912-922页

作者： Qiu-yu GUO Jun PENG ti-chao sHAN Miao XU Department of Hematology Qilu Hospital of Shandong UniversityJinan250012China Department of Critical Care Medicine Qilu Hospital of Shandong UniversityJinan250012China

Objective Coagulation abnormalities are common and prognostically significant in intensive care units(ICUs)and are associated with increased *** study aimed to explore the association between the levels of coagulation markers and the risk of mortality among ICU patients with coagulation *** This retrospective study investigated patients with coagulation abnormalities in the ICU between January 2021 and December *** initial point for detecting hemostatic biomarkers due to clinical assessment of coagulation abnormalities was designated day *** were followed up for 28 days,and multivariate logistic regression analysis was utilized to identify risk factors for *** Of the 451 patients analyzed,115 died,and 336 were alive at the end of the 28-day *** analysis revealed that elevated thrombin-antithrombin complex(TAT),tissue plasminogen activator inhibitor complex(tPAIC),prolonged prothrombin time,and thrombocytopenia were independent risk factors for *** nonovert disseminated intravascular coagulation(DIC)patients,older age and thrombocytopenia were associated with increased risks of mortality,whereas elevated levels of plasminα2-plasmin inhibitor complex(PIC)were found to be independent predictors of *** patients with overt DIC,elevated levels of tPAIC were independently associated with increased risks of ***,thrombocytopenia was independently associated with increased risks of mortality in patients with *** Coagulation markers such as the TAT,tPAIC,PIC,and platelet count were significantly associated with mortality,underscoring the importance of maintaining a balance between coagulation and *** findings highlight the potential for targeted therapeutic interventions based on specific coagulation markers to improve patient outcomes.

关键词： blood coagulation markers mortality risk factors disseminated intravascular coagulation intensive care unit

Effects of calcium compounds on the carbothermic reduction of vanadium titanomagnetite concentrate

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International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 301-309页

作者： Xiao-hui Li Jue Kou ti-chang sun shi-chao Wu Yong-qiang Zhao school of Civil and Resource Engineering University of Science and Technology Beijing

Effects of calcium compounds on the carbothermic reduction of vanadium titanomagnetite concentrate(VTC) were investigated. It was found that calcium compounds had great effects on the metallization rate of the reduction product, the order of the metallization rate of reduction product being CaCO3 > no additive > CasO4 > CaCl2, which indicated that the addition of CaCO3 was more conducive to promoting the reduction of iron than other calcium compounds. Gas analysis showed that there were mainly two processes in the carbothermic reduction of VTC, a solid–solid and a solid–gas reaction. The concentrations of CO and CO2 were highest when CaCO3 was added, while that in a roasting system decreased the most when CaCl2 was added. X-ray diffraction(XRD) analysis showed that calcium compounds could change the reduction process of ilmenite in VTC. The phase compositions of the reduction products were changed from metallic iron(Fe) and anosovite(Feti2O5) to metallic iron(Fe) and perovekite(CatiO3) when calcium compounds were added. Additionally, CasO4 and CaCl2 could significantly promote the growth of metallic iron particles, though the existence of Fe-bearing Mg2tiO4 in reduction products was not conducive to the reduction of iron. The formation of Fes would further hinder the reduction of iron after adding CasO4.

关键词： vanadium titanomagnetite concentrate calcium compounds carbothermic reduction metallic iron perovekite