Effect of titanium on the sticking of pellets based on hydrogen metallurgy shaft furnace:Behavior analysis and mechanism evolution

Direct reduction based on hydrogen metallurgical gas-based shaft furnace is a promising technology for the efficient and low-carbon smelting of vanadium-titanium magnetite.However,in this process,the sticking of pellets occurs due to the aggregation of metal-lic iron between the contact surfaces of adjacent pellets and has a serious negative effect on the continuous operation.This paper presents a detailed experimental study of the effect of TiO2 on the sticking behavior of pellets during direct reduction under different conditions.Results showed that the sticking index(SI)decreased linearly with the increasing TiO2 addition.This phenomenon can be attributed to the increase in unreduced FeTiO3 during reduction,leading to a decrease in the number and strength of metallic iron interconnections at the sticking interface.When the TiO2 addition amount was raised from 0 to 15wt%at 1100°C,the SI also increased from 0.71%to 59.91%.The connection of the slag phase could be attributed to the sticking at a low reduction temperature,corresponding to the low sticking strength.Moreover,the interconnection of metallic iron became the dominant factor,and the SI increased sharply with the increase in re-duction temperature.TiO2 had a greater effect on SI at a high reduction temperature than at a low reduction temperature.

Assessment of Knowledge, Attitude and Practices among Healthcare Workers in a Tertiary Care Hospital on Needle Stick Injury

Purpose: Needle-stick injury (NSI) is one of the most potential occupational hazards for healthcare workers because of the transmission of blood-borne pathogens. As per recent data, around 30 lakh healthcare workers sustain Needle stick injuries each year. This study was conducted to assess healthcare workers’ knowledge, attitude and practices regarding needle stick injury. Materials & Methods: A cross-sectional study was conducted in a Tertiary Care Hospital over the period of 3 months. The study population consisted of Intern Doctors, Post Graduate resident Doctors, Staff Nurses, laboratory technicians of Government Medical College and New Civil Hospital, Surat (n = 300). The data were collected using a self-administered questionnaire via the means of Google Forms. Questionnaire was made with prior review literature. The data obtained were entered and analysed in Microsoft Excel. Results: The prevalence of NSI in our study was 46%, with a higher prevalence among the PG residents (72%). Overall scores regarding knowledge and attitude were better in PG residents (knowledge score > 7 in 71% and Attitude Score > 7 in 68% of PG Residents). Even though the PG residents scored highest in the knowledge category, the majority of them suffered needle stick injuries as a result of poor practice scores. Among those who had NSI (n = 139/300), 70% of study participants had superficial injuries, only 9% reported the incident, 18% got medical attention within 2 hours of the incident, and 7% followed up to recheck their viral markers status. Most incidents of NSI were due to hypodermic needles while recapping needles. Conclusion: Exposure to needle stick injuries and their underreporting remains a common problem. It is imperative that healthcare workers receive regular training on the proper handling of sharp objects. We can also draw the conclusion that preventing NSIs requires putting knowledge into practice.

Effect of Mouth Opening Training Stick Combined with Oral Massage on Mouth Opening Difficulty in Head and Neck Cancer Patients after Treatment

Objective: To study the application effect of mouth-opening training sticks combined with oral massage on patients with mouth-opening difficulty after treatment for head and neck cancer. Methods: Using convenient sampling, 60 patients with mouth-opening difficulty after treatment for head and neck cancer admitted to the Oncology Department from February 2022 to October 2023 were selected for a 2-week exercise and nursing program. The patients were divided into a control group (February 1, 2022 to November 30, 2022) and an observation group (December 1, 2022 to October 31, 2023), with 30 patients in each group. The control group underwent routine mouth-opening functional exercises combined with cork for oral support training, while the observation group underwent routine mouth-opening functional exercises combined with oral massage and mouth-opening training sticks for oral support training. The mouth-opening degree, mouth-opening difficulty level, comfort level, compliance, and quality of life were observed in both groups. Results: Before the intervention, there were no statistically significant differences in mouth-opening degree and mouth-opening difficulty level between the two groups (P > 0.05). After the intervention, the mouth-opening degree, mouth-opening difficulty level, oral comfort level, compliance, and QLICP-HN scores in the observation group were all better than those in the control group, with statistically significant differences (P < 0.05). Conclusion: The combination of mouth-opening training sticks and oral massage with mouth-opening functional exercises can effectively improve the degree of mouth-opening difficulty, enhance oral comfort, increase compliance with mouth-opening exercises, and improve quality of life.

Prevalence of Occupational Injury and Knowledge of Post-Exposure Prophylaxis Accessibility among Healthcare Workers in Mogadishu, Somalia

Introduction: Healthcare workers in Mogadishu, Somalia face significant occupational injury risks, particularly needle stick injuries, with 61.1% reporting incidents. This poses a serious threat to their health, leading to infections such as hepatitis B, hepatitis C, and HIV. Despite the high prevalence of injuries, awareness of Post-Exposure Prophylaxis (PEP) accessibility is relatively high, with 84.0% of respondents aware of it. However, there are gaps in knowledge and implementation, as evidenced by variations in availability of PEP. Improving workplace safety measures, providing comprehensive training on injury prevention and PEP protocols, and ensuring consistent availability of PEP in healthcare facilities are crucial steps to safeguard the well-being of healthcare workers in Mogadishu, Somalia. Methods: A cross-sectional study was conducted among hospital workers in Mogadishu, Somalia, focusing on professionals from various healthcare facilities. The study targeted nurses, doctors, laboratory personnel, and pharmacists. Purposive sampling was employed, resulting in a sample size of 383 calculated using Fisher’s sample size formula. Data were collected using coded questionnaires entered into Microsoft Excel 2019 and analyzed with SPSS software to generate frequencies and proportions, presented through frequency tables and pie figures. Results: The study in Mogadishu, Somalia, examined the prevalence of occupational injuries and knowledge of Post-Exposure Prophylaxis (PEP) accessibility among healthcare workers. Findings indicate a high prevalence of injuries, with 61.1% reporting incidents, predominantly needle stick injuries (60.6%). Despite the majority seeking prompt medical attention (72.0%), work-related illnesses affected 53.2% of respondents, notably work-related stress (59.5%). While most received training on injury and illness prevention (68.9%), gaps exist in PEP awareness, with 16.0% unaware of it. Nonetheless, 84.0% were aware, predominantly through health facilities (52.0%). Availability of PEP was reported by 71.3% in healthcare facilities, with variations in shift availability. The majority reported guidelines for PEP use (55.7%). Efforts are needed to bolster PEP awareness and ensure consistent availability in healthcare facilities to safeguard worker health. Conclusion: High prevalence of occupational injuries among healthcare workers, with needle stick injuries being the most common (60.6%). Despite this, 84.0% of respondents were aware of Post-Exposure Prophylaxis (PEP), primarily learning about it from health facilities (52.0%). While 71.3% reported the availability of PEP in their facility, 28.7% noted its unavailability. These results emphasize the need for improved education and accessibility of PEP to mitigate occupational injury risks.

闭合复位内固定联合joy stick操纵杆技术治疗儿童难复性肱骨髁上骨折效果观察

目的观察闭合复位内固定联合joy stick操纵杆技术治疗儿童难复性肱骨髁上骨折的临床效果。方法选择因“肘关节外伤后肿痛伴活动受限”入院患儿4例,均诊断为GartlandⅢ型肱骨髁上骨折,均采用闭合复位内固定联合joy stick操纵杆技术治疗。结果4例患儿均获得满意复位,无一例转为切开复位,平均手术时间66 min,住院时间均<5 d。出院后规律复查换药,1月后均恢复良好,骨折线对位满意,未出现感染等短期并发症,拔除克氏针。结论Joy stick操纵杆技术不仅可以更加准确地控制肱骨轴的旋转,还能更快地获得复位和维持复位,进针顺利,手术时间短,减少转为切开复位,降低手术难度,且未增加围手术期并发症。

Modeling and simulation of solvent behavior and temperature distribution within long stick propellants with large web thickness undergoing drying

Drying is a complicated physical process which involves simultaneous heat and mass transfer in the removal of solvents inside propellants.Inappropriate drying techniques may result in the formation of a hard skin layer near the surface to block the free access of most solvent through for long stick propellants with large web thickness,which lead to lower drying efficiency and worse drying quality.This study aims to gain a comprehensive understanding of drying process and clarify the mechanism of the blocked layer near the propellant surface.A new three-dimensional coupled heat and mass transfer(3D-CHMT)model was successfully developed under transient conditions.The drying experiment results show that the 3DCHMT model could be applied to describe the drying process well since the relative error of the content of solvent between simulation and experiment values is only 5.5%.The solvent behavior simulation demonstrates that the mass transfer process can be divided into super-fast(SF)and subsequent minorfast(MF)stages,and the SF stage is vital to the prevention of the blocked layer against the free access for solvent molecules inside propellant grains.The effective solvent diffusion coefficient(Deff)of the propellant surface initially increases from 3.4×10^(-6)to 5.3×10^(-6)m^(2)/s as the temperature increases,and then decreases to 4.1×10^(-8)m^(2)/s at 60-100 min.The value of Deffof surface between 0-1.4 mm has a unique trend of change compared with other regions,and it is much lower than that of the internal at100 min under simulation conditions.Meanwhile,the temperature of the propellant surface increases rapidly at the SF stage(0-100 min)and then very slowly thereafter.Both the evolution of Deffand temperature distribution demonstrate that the blocked layer near the propellant surface has been formed in the time period of approximately 0-100 min and its thickness is about 1.4 mm.To mitigate the formation of blocked layer and improve its drying quality of finial propellant products effectively,it should be initially dried at lower drying temperature(30-40℃)in 0-100 min and then dried at higher drying temperature(50-60℃)to reduce drying time for later drying process in double base gun propellants.The present results can provide theoretical guidance for drying process and optimization of drying parameters for long stick propellants with large web thickness.

超棒的耳坠 新概念闪存盘KINGMAX Super stick体验

很多技术含量不高但又非常热销的产品往往无法逃脱被仿造的恶运，MP3如此，闪存盘更是如此，市场上的MP3，闪存盘除了上面贴的品牌不一样外，外形、颜色几乎都一模一样，面对这种仿造行为，真正有实力的厂商往往会立即做出反应，看惯了千篇一律的闪存盘产品后，就让我们体验一下KINGMAX的新概念产品Super stick，人们为它取了一个好听的中文名字——“超棒”。

华为中东北非首发HSUPA USB Stick E170

在近日于埃及开罗举行的“ITU Telecom Africa”展上，华为发布了中东北非地区首款HSUPA USB Stick E170，并展示了多媒体3G手机U3300。E170支持HSPA／UMTS／EDGE／GPRS／GSM多种制式（HSDPA7．2Mbps，HSUPA2Mbps），可在线观看清晰流畅的流媒体影片，下载、上传大容量文件。此外，E170还可支持Windows2000、XP、Vista和MAC等多种操作系统，为客户带来更多便利。预计E170将于5月份在沙特阿拉伯和阿联酋上市。

华为发布中东北非地区首款HSUPA USB Stick E170

5月12日，华为在埃及开罗举行的“ITU Telecom Africa”展发布了中东北非地区首款HSUPAUSB Stick E170，并展示了多媒体3G手机U3300。据悉，E170将于近期在沙特阿拉伯和阿联酋上市。

An Artificial Intelligence Algorithm for the Real-Time Early Detection of Sticking Phenomena in Horizontal Shale Gas Wells

Sticking is the most serious cause of failure in complex drilling operations.In the present work a novel“early warning”method based on an artificial intelligence algorithm is proposed to overcome some of the known pro-blems associated with existing sticking-identification technologies.The method is tested against a practical case study(Southern Sichuan shale gas drilling operations).It is shown that the twelve sets of sticking fault diagnostic results obtained from a simulation are all consistent with the actual downhole state;furthermore,the results from four groups of verification samples are also consistent with the actual downhole state.This shows that the pro-posed training-based model can effectively be applied to practical situations.

Meta-analysis of the acupoint application therapy for stable chronic obstructive pulmonary disease

Objective:To systematically evaluate the clinical efficacy and safety of acupoint application in the treatment of stable chronic obstructive pulmonary disease.Methods:A comprehensive search of domestic and international databases,the search time is limited to nearly ten years,collecting traditional Chinese medicine acupoint application in the treatment of chronic obstructive pulmonary disease in stable phase of randomized controlled trials.Literature screening,information extraction and literature quality evaluation were carried out independently by two researchers,and Meta analysis was carried out by Revman software.Results:A total of 42 RCTs with a total of 4192 patients were included.The results of Meta analysis showed that:Compared with the routine treatment of western medicine,the addition of acupoint application therapy can significantly increase the effective rate[RR=1.23,95%CI(1.19,1.27),P<0.00001]and FEV1/FVC[MD=4.46,95%CI(3.17,5.76),P<0.00001].Significantly improved BODE index[MD=-0.63,95%CI(-0.87,-0.40),P<0.00001],SGRQ score[MD=-6.77,95%CI(-9.81,-3.72),P<0.00001],CAT score[MD=-3.33,95%CI(-3.87,-2.79),P<0.00001]and TCM syndrome integral[MD=-3.51,95%CI(-3.96,-3.06),P<0.00001].The differences is statistically significant and the safety profile is good.Conclusion:On the basis of routine treatment of COPD western medicine,acupoint application therapy can significantly improve the clinical symptoms of patients with less adverse reactions.However,due to the limitations of the research,high-quality research is still needed to provide further evidence.

PUSHING-PLUCKING STIMULATION OF ACUPOINTS WITH OX-HORN-MADE STICK NEEDLE FOR TREATMENT OF APOPLECTIC HEMIPLEGIA

The present series of treatment were made up of 103 cases of apoplectic hemiplegia patients. 55 cases of them formed stick needle group and were treated by using pushing plucking manipulation with stick needle and 48 cases formed filiform needle group and were treated with routine filiform needle. After 4 courses of treatment, results showed that the effective rates of stick needle group and filiform needle group were 54.5% and 52.08% respectively. Statistical analysis indicated that there was no significant difference between these two groups. Thus, stick needle is useful in convalescence medicine.

STUDY ON SLAG DETACHABILITY AND STICK SLAG MECHANISM OF SSFCE

In the paper, the effects of linear expansion coefficient and basic index of melting slag on the detachability of self shielded flux cored electrode (SSFCE) are investigated. An equation is obtained on the principles of ceramics and mineralography which predict the detachability of basic SSFCE. In addition, stick slag mechanism of SSFCE is analyzed.

供需中的Hockey-stick现象分析及对策研究

许多公司的产品需求在连续而固定的周期会出现前低后高,即 Hockey-stick 现象,这种现象普遍存在于供应链之中并困扰着许多的企业管理者.不认为其产生的原因是公司对销售人员的周期性考评的传统观点,并以快速消费品行业为背景,通过建立模型,得出了这种现象主要是公司普遍采用的总量折扣(Volume Discounts)价格政策导致的结论,并提出了公司可以通过多产品组合定价等方法缓和这个问题,最后通过一个实例证实了文章的观点.

垂直井内上击器解卡过程中钻柱振动数学模型的建立与求解及动态解卡力分析

对于油气井内解卡过程中的钻柱振动情况及动态解卡力,目前还没有有效的分析方法。该研究建立了垂直井内上击器解卡过程中考虑钻井流体阻尼的钻柱振动数学模型,并进行了求解,分析了几个主要因素对动态解卡力的影响。首先,介绍了上击器解卡过程中钻柱振动的三个阶段:(1)拉伸储能阶段,对钻柱进行静力学分析;(2)泄压阶段,结合拉伸储能阶段的计算结果,通过特征函数展开法与拉普拉斯变换求解了泄压阶段的钻柱振动数学模型;(3)撞击阶段,引入了将钻柱-钻柱轴向撞击的强非线性问题转化为多段钻柱振动的线性问题的求解思路,通过紧差分方法对撞击阶段的钻柱振动数学模型进行求解,获得了钻柱中的弹性波传播规律以及动态解卡力。其次,建立了与三个阶段相应的数学模型并求解。然后,采用该模型计算了无阻尼情况下的荷载场与动态解卡力,经低通滤波处理后的计算结果与相应条件下的解析解以及ABAQUS软件所得结果均有较好的吻合,验证了该工况下解法的准确性。最后,分析了震击启动拉力、上击器位置、钻井流体黏度、以及芯轴有效距离对动态解卡力的影响。所得结论对使用震击解卡的作业过程具有一定的指导意义。

Effects of Plant Spacing and Finger Sticking Area Settings for Machine Transplanting on Yield of Double-season Early Rice

The effects of rice transplanters＇ transplanting settings（plant spacing and finger sticking area） on rice yield were investigated in two early-season rice cultivars：hybrid rice cultivar（Zhuliangyou 819） and conventional rice cultivar（Zhongjiazao 17）.The results showed that,different transplanting settings resulted in different numbers of transplanted basic seedlings,and the rice yield was significantly correlated with the number of transplanted basic seedlings.The number of transplanted basic seedlings increased with the decrease of plant spacing and the increase of finger sticking area.The rate of lost hills of machine transplanting decreased with the increase of finger sticking area.The leaf area index and amount of dry matter accumulation were highly correlated with the number of transplanted basic seedlings.The average yield of the rice transplanted with a plant spacing of11.5 cm was higher than that with a plant spacing of 13.8 cm.In the field transplanted with the rice under the plant spacing of 13.8 cm,the rice yield increased with the increase of finger sticking area,and the finger sticking area of 2.23 cm2 showed the highest rice yield of 8 174.16 kg/hm2 of Zhuliangyou 819 and 7 925.54kg/hm2 of Zhongjiaozao17.In the field transplanted with the rice under the plant spacing of 11.5 cm,the rice yield was the highest with the finger sticking area of 1.83 cm2,and then decreased with the large finger sticking area.Under the plant spacing of 11.5 cm,the highest rice yields of Zhuliangyou 819 and Zhongjiaozao17 were 8 492.94 kg/hm2 and 8 000.23 kg/hm2,respectively.Therefore,the preferred machine transplanting settings for double-season early rice are a plant spacing of11.5 cm and a finger sticking area of 1.83 cm2,while the finger sticking area should be increased to 2.23 cm2 for conventional rice cultivars.

Hockey-stick现象与企业物流绩效关联的实例分析

Hockey-stick现象普遍存在于供应链之中并对企业的生产和物流运作极为不利。通过对某国际著名食品公司在大陆某生产厂的深入调研、数据收集和分析,验证了Hockey-stick现象对需求波动以及需求波动对企业物流绩效的影响。

APPLICATION OF 2-D MOIRE INTERFEROMETRYOF STICKING FILM IN HUMAN TIBIA MEASUREMENT

This paper makes use of the method of testing and measuring the human body tibia by using2-D moire interferometry of sticking film. hased on the J'--y direction moire patterns recorded synchronously by 2-D optical path,the elastic constant,strain and displacement of the tibia are measured.Compared with the electric measuring method the error is samll and the sensitivity is high.

探索中国美食之旅

1 When I was about to go to China,I was so fasci⁃nated that I completely forgot about the food I would be eating during my stay.It wasnt until my Chinese friend brought out chopsticks and told me to practise using them that I realized how difficult it was.My friend laughed,but I had so many questions in my mind.Why dont the Chinese have proper cutlery(餐具)?I had never seen Chinese people using spoons in movies,only chopsticks.I mentally prepared myself for the chopstick journey ahead.

Eating Hot Pot

Hot pot is a popular Chinese dish.It is delicious!You sit at a table with a pot of hot broth.First,the broth has to boil.Then you can cook many different things in it.Many people put seafood and different kinds of meat in hot pot.Vegetables such as cabbage and corn are delicious in it,too.People also add mushrooms,tofu and noodles to hot pot.Take some cooked food from your hot pot with your chopsticks.Dip it in some sauce and enjoy!