A conventional valve-controlled cylinder drive system is not energy efficient, and a pump-controlled can be unstable in some particular conditions. For systems requiring fast response, hybrid system, that combines the advantages of both valve systems, proposed. As nonlinear behaviours are inevitable most asymmetric also suffers from such problems, extra identified, for example, stall when change its direction motion. simulation model developed used to investigate system's which analysed...

The reciprocating cutting system is one of the key parts a tea harvester; and its performance directly determines power consumption harvesting quality machine. Because structural parameters systems do not match cut; resulting in larger resistance, it necessary to optimize parameters. cricket mouth part has outstanding tree fiber cutting; curved characteristics upper jaw have been useful improve efficiency system. Quantitative analysis structure revealed that arc-shaped incisor lobe would...

Harvesting is an important procedure for hydroponic lettuces in plant factories. At present, are mainly harvested manually, and the key difficulty mechanical harvesting reducing occurrence of leaf injury. Measuring size using image processing method intelligently adjusting operating parameters device foundation high-quality lettuces. The overlapped leaves adjacent cause difficulties measuring lettuce size, especially expansion size. Therefore, we proposed height according to upper contour...

Hydroponic lettuce is the main cultivated leafy vegetable in plant factories, and its scattered leaves are delicate easily injured. Harvesting an important process production of hydroponic lettuce. To reduce injury level during harvesting, impacts flexible finger-grabbing position applied on grabbing force area injured were investigated this study by utilizing thin-film sensors a high-speed video camera. According to overlapping structural characteristics adjacent lettuce, positions divided...

Hybrid pump-controlled asymmetric cylinder drive systems are implemented for energy saving purposes in applications that do not require fast responses. Under low-velocity and low-pressure conditions, the friction influence hybrid system is evident. Researchers have developed various models to describe friction. These based on relative motion of contact surfaces, they can be categorized into static dynamic models. For example, suitable simulating hydraulic seals under lubrication conditions....

There are various dependencies in the component-based software systems. ANP can describe complex structure of system using network representation for structure. Therefore, it assign reliability target to each component by comparing relative importance users and considering constraints cost. However, method only estimate statically indirectly design stage. During service process software, how assess reliability, further validate rationality allocation stage dynamic problems, which require a...

The valve-controlled cylinder drive system is the most common type among hydraulic applications. Nonlinear behaviour in such systems inevitable when valve spool around its null position. We utilised component linking method to investigate nonlinearities a Moog asymmetric by simulation Fortran, which generalised concept introduced and validated comparing experimental results. An X factor proposed describe state, constant extending or retracting, but numerically calculated underlap region....

Synovial sarcoma (SS), a malignant and uncommon soft tissue sarcoma, typically manifests in the extremities trunk. However, its occurrence infratemporal fossa (ITF) of head neck is exceedingly rare. Patients afflicted with SS this anatomical region pose considerable challenges, as radical surgery often difficult to undertake, leading high rate postoperative recurrence. Moreover, it effectively control tumor when cancer relapses. Much our understanding regarding ITF stems from limited case...

The leaves of spinach are delicate and easily injured during harvesting. To reduce the damage rate increase conveyance success rate, an orderly harvester was designed manufactured, key conveying parameters were optimized by simulation experiments. compression stress determined tests. Then, a finite element model for clamping established, influence different heights on deformation equivalent simulated analyzed. Finally, response surface Box–Behnken experiments conducted to optimize...

This study aimed to investigate the cerebral small vessel disease (SVD), an intrinsic disorder of brain's perforating arterioles, which could cause serious cognitive decreasing and trigger dementia. In this study, we present a multi-step computational approach construct functional SVD long non-coding RNA (lncRNA)-mediated ceRNA network (LMCN) by integrating genome-wide lncRNA mRNA expression profiles, miRNA-target interactions, analyses. We used hypergeometric test evaluate enrichment...

The chassis of rice transplanter tends to vibrate severely in the severe working environment, causing a effect on operational performance and driving comfort. In order avoid this situation, paper constructs vibration evaluation system carries out experimental analysis. According optimal acceleration sensor placement scheme, test platform was designed. Taking high-speed as research object, study carried experiments modal analysis optimization chassis. three-dimensional model transplanting...

For area-covering mobile robots working in the outdoor unstructured environment, a strategy of unmarked area boundary creation and identification is proposed. The designed localization system matching algorithm using digital map serve robot to navigate work area. method error-correction based on environmental features ultrasonic sensors array adopted. are matched with correct errors during robot's real-time coverage operation. results experiment show that reliable ensure accurate behaviors robot.

The valve controlled cylinder drive system is the most common type among hydraulic applications. nonlinear behaviour in such inevitable when spool around its null position [1] , Leaney [2] utilised component linking method to investigate nonlinearities a Moog asymmetric by simulation Fortran, which generalised concept introduced and validated comparing experimental results. An factor proposed concepts describe state, constant extending or retracting, but numerically calculated underlap...

Objective To study radiotherapy modality and prognosis in patients with multiple brain metastases. Methods One hundred twelve metastases were treated WBRT, SRS/SRT, WBRT plus SRS/SRT differently, the median survival time lethality of analyzed. Results The was 3.8 months, 7.8 months 8.0 differently. 67.7%, 15.7%,and 11.6% SRS/SRT,WBRT SRS/SRT. Conclusion can improve local control ultimate outcome less numbers.

// Chao Li 1, 2, * , Yinju Zhu 3, Tong 4 Ye Xu 5 Yun Guan 2 Jingwen Wang Huankun 3 and Ji 1 Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China Medical College, University, Dalian Third People’s Hospital Affiliated to (Dalian Hospital), Dalian, Radiology, Colorectal Surgery, These authors have contributed equally this work Correspondence to: Zhu, email: leoon.zhu@gmail.com Wang, 0411whk@163.com Keywords: pelvic recurrence; advanced rectal cancer;...

A conventional valve-controlled cylinder drive system is not energy efficient, and a pump-controlled can be unstable in some particular conditions.For systems requiring fast response, hybrid system, that combines the advantages of both valve systems, proposed.As nonlinear behaviours are inevitable most asymmetric also suffers from such problems, extra identified, for example, stall when change its direction motion.A simulation model developed used to investigate system's which analysed...