The eyes of the female small white butterfly, Pieris rapae crucivora , are furnished with three classes short-wavelength photoreceptors, sensitivity peaks in ultraviolet (UV) (λ max = 360 nm), violet (V) 425 and blue (B) 453 nm) wavelength range. Analyzing spectral origin we isolated novel mRNAs encoding opsins corresponding to short-wavelength-absorbing visual pigments. We localized opsin retinal tissue found that each short-wavelength-sensitive photoreceptor exclusively expresses one...

In order to verify the compliance requirements of typical civil aircraft cabin doors airworthiness provisions in cold weather, a high and low temperature experimental was built with boarding door as research object. The freezing opening test door's inner handle outer carried out by means rain environment. It is found that ice surface faults are orderly, there no stuck noise during test, mechanism intact, hatch can be closed normally. time after icing 6.17 s, which meets clause. results...

This letter described ultraviolet (UV) radiation sensing with ZnO based film bulk acoustic-wave resonator (FBAR). The resonant frequency upshifted when there was UV illumination on the FBAR. For 365 nm light, upshift 9.8 kHz an intensity of 600 μW/cm2, and detection limit sensor 6.5 nW. increase in FBAR proposed to be due density decrease upon illumination. When incident film, it can cause oxygen desorption from surface, resulting film. study has proven feasibility low using

In this paper, equal torque effect (ET‐effect) is discovered, which means that the same can be obtained by applying different voltage vectors whose terminals locate on a special curve called (ET‐curve). By of ET‐effect, an improved predictive control (PTC) without weighting factor proposed. First, to obtain volt‐sec ET‐curve, proposed PTC calculates duty cycles all intersected with and then establishes finite set accumulating those vectors. Second, cost function includes only flux error...

The miniaturization, lightweight, and solidification of pulse forming lines (PFLs) are prime significance during the evolution pulsed power technology. In this paper, an all-solid-state annular line (APFL) based on film-insulated coaxial transmission is developed to generate fast-rise time quasi-square pulses. First, a coiled (CCTL) comprised multilayer polypropylene films with outstanding insulating properties constructed. It can withstand direct current voltages up 200 kV, cross section...

To detect abnormal microRNA (miRNA) expression in type 1 gastric neuroendocrine neoplasms (g-NENs) and find potential target genes.Tumour tissues from patients with g-NENs were used as experimental samples, mucosal the same obtained during gastroscopy review after several months control samples. miRNA was examined Agilent human chips validated via RT-PCR. Three types of gene prediction software (TargetScan, PITA, microRNAorg) to predict genes differentially expressed miRNAs, a...

Well-differentiated pancreatic neuroendocrine tumors (PanNETs) usually have a good prognosis; however, there are patients that experience recurrence after curative resection. To explore recurrence-related risk factors by analyzing clinicopathological data of PanNETs radical surgery. Clinical and pathological from 47 with well-differentiated at China-Japan Friendship Hospital January 2012 to March 2016 were analyzed retrospectively. Univariate multivariate analyses the for postoperative...

Clinicopathological characteristics and prognosis of 77 cases with type 3 gastric neuroendocrine tumours

A megavolt low-jitter self-break repetitive gas switch is developed by the use of corona stabilization and multi-stage structure in this paper. This multi-stage, consisting one stage subsequent rimfire stages. The breakdowns first, then stages are self-fired over-voltage from closure stage. SF6 used switch. It has been proven experiment that switch, which consists 1.3-cm gap five 0.5-cm stages, can operate at repetition rate frequency (PRF) 50 Hz with a voltage jitter less than 2% 2000...

A MV-class SF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> -insulated supporting board (ISB) for Tesla-type generators is proposed, which has advantages of compact structure and light weight, but its lifetime short, only 30,000 pulses. Therefore, various techniques are employed to prolong the lifetime, include grooving on surface, elimination triple junction (TJ) regions, high-temperature drying, control water content in surrounding...

Abstract Multi-stage gas switches (MSGSs) are widely used in megavolt pulsed power systems due to their advantages of high withstand voltage, fast establishing time and relatively operating frequency. Multiple operation modes, which induced by the different breakdown sequences at each stage, found affect characteristics switch. Based on theoretical analysis working principle, classification mode factors determining MSGS proposed. Methods for investigating output waveform established...

Owing to their wide applications in the field of pulsed power technology, further improvement quasi-square pulses with fast risetime has attracted increasing attention. In present work, an optimal double-matched Marx generator (DMG), which combines both impedance matching and time matching, is proposed generate fast-rising pulses. First, a theoretical analysis pulse forming characteristics DMG consisting line (PFL) module performed, demonstrates that square-wave are obtainable because energy...

Abstract The structures of differently sized reduced graphene oxides (rGOs), the dispersion state, and compatibility rGO with silicone rubber (SR) are important impact factors on properties SR–rGO nanocomposites. To analyze influence size SR‐based nanocomposites, three sheets were introduced into SR to fabricate a series SR–middle‐sized oxide (MrGO) nanocomposites showed best mechanical thermal properties. Compared blank sample, SR–MrGO presented remarkable two‐fold three‐fold increases in...

Experiments on centimeter scale vacuum gap breakdown between plate electrodes under microsecond pulses were carried out. The images of gaps formed by titanium obtained in each period discharge an optical diagnostic system. showed that the plasma initially cathode surface; anode several hundred nanoseconds due to bombardment electron-beam; expanded along with development discharge, and average horizontal vertical velocities about 1.8 cm/μs 4.2 cm/μs, respectively. Based results, a theoretical...

Objective . The aim of this network meta‐analysis (NMA) was to explore the effectiveness different traditional Chinese medicine injections (TCMIs) combined with systemic chemotherapy for treatment hepatocellular carcinoma (HCC). Methods A comprehensive search randomized controlled trials (RCTs) performed regard TCMIs treating HCC in seven electronic databases up November 2019. quality assessment included RCTs conducted according Cochrane risk bias tool. objective response rate (ORR),...

The communication circuit network is widely employed for signal transmission in high‐voltage pulse driver system, commanding, controlling, measurement &amp; communication. electromagnetic compatibility of the mainly decides stability and reliability system. Aiming at interference (EMI) problems RS422 Tesla driver, generated disturbance sources characteristics from itself are analysed five divided work stages, two typical simplified EMI coupling modes also presented this Letter. In cable...