In order to solve the problem of tension control in the actual unwinding process of the lithium battery diaphragm slitting machine, the dynamic model of diaphragm and slitting machine unwinding ...system is constructed in this paper based on the diaphragm deformation in the unwinding system during the sampling period, in view of the nonlinear system characteristics of the unwinding system and the unstable diaphragm tension caused by the uncertain interference and the inaccurate model in the unwinding process. Considering the unwinding system characteristics of multi-output and strong coupling between outputs, a multi-variable comprehensive sliding surface for balancing unwinding diaphragm tension and unwinding speed, and a sliding mode controller for controlling the diaphragm tension in unwinding process are designed. And the stability of the sliding surface and the controller is proved. The fault-tolerant improvement of the sliding mode controller is carried out for practical engineering application, and the differential tracking disturbance observer is proposed to quickly estimate and compensate the external disturbance of the system. Finally, the results of the comparative experiments verify the effectiveness of the proposed diaphragm tension control scheme.
Ginger is a widespread source of herbal medicine and traditional spices. Among its various bioactive components, ginger polysaccharides (GPs) have attracted the attention of researchers worldwide ...because of their significant bioactivity. Recent studies have demonstrated the antioxidant, antitumour, anti-inflammatory, immunomodulatory, hypoglycaemic, cough suppressant and thrombotic anticoagulant effects of GPs. However, the structure-bioactivity relationship of GPs has yet to be comprehensively investigated. This review aims to explore all the current published studies on GPs. It further examines various aspects, including the extraction and purification methods, structure, bioactivity, application and structure-bioactivity relationship of GPs. Thus, this review intends to provide a reference for future GP-related research and development.
Photons at microwave and optical frequencies are principal carriers for
quantum information. While microwave photons can be effectively
controlled at the local circuit level, optical photons can ...propagate
over long distances. High-fidelity conversion between microwave and
optical photons will allow the distribution of quantum states across
different quantum technology nodes and enhance the scalability of
hybrid quantum systems toward a future “Quantum Internet.” Despite a
frequency difference of five orders of magnitude, there has been
significant progress recently toward the transfer between microwave
and optical photons with steadily improved efficiency in a coherent
and bidirectional manner. In this review, we summarize this progress,
emphasizing integrated device approaches, and provide a perspective
for device implementation that enables quantum state transfer and
entanglement distribution across microwave and optical domains.
Abstract
We develop a new nonparametric method to reconstruct the equation of state (EoS) of a neutron star with multimessenger data. As a universal function approximator, the feed-forward neural ...network (FFNN) with one hidden layer and a sigmoidal activation function can approximately fit any continuous function. Thus, we are able to implement the nonparametric FFNN representation of the EoSs. This new representation is validated by its capability of fitting the theoretical EoSs and recovering the injected parameters. Then, we adopt this nonparametric method to analyze the real data, including the mass–tidal deformability measurement from the binary neutron star merger gravitational-wave event GW170817 and mass–radius measurement of PSR J0030+0451 by NICER. We take the publicly available samples to construct the likelihood and use the nested sampling to obtain the posteriors of the parameters of the FFNN according to the Bayesian theorem, which in turn can be translated to the posteriors of the EoS parameters. Combining all of these data for a canonical 1.4
M
⊙
neutron star, we get a radius
R
1.4
=
11.83
−
1.08
+
1.25
km and tidal deformability
Λ
1.4
=
323
−
165
+
334
(90% confidence interval). Furthermore, we find that in the high-density region (≥3
ρ
sat
), the 90% lower limits of
c
s
2
/
c
2
(where
c
s
is the sound speed and
c
is the velocity of light in vacuum) are above 1/3, which means that the so-called conformal limit (i.e.,
c
s
2
/
c
2
<
1
/
3
) is not always valid in the neutron stars.
Magnon dark modes and gradient memory Zhang, Xufeng; Zou, Chang-Ling; Zhu, Na ...
Nature communications,
11/2015, Letnik:
6, Številka:
1
Journal Article
Recenzirano
Odprti dostop
Extensive efforts have been expended in developing hybrid quantum systems to overcome the short coherence time of superconducting circuits by introducing the naturally long-lived spin degree of ...freedom. Among all the possible materials, single-crystal yttrium iron garnet has shown up recently as a promising candidate for hybrid systems, and various highly coherent interactions, including strong and even ultrastrong coupling, have been demonstrated. One distinct advantage in these systems is that spins form well-defined magnon modes, which allows flexible and precise tuning. Here we demonstrate that by dissipation engineering, a non-Markovian interaction dynamics between the magnon and the microwave cavity photon can be achieved. Such a process enables us to build a magnon gradient memory to store information in the magnon dark modes, which decouple from the microwave cavity and thus preserve a long lifetime. Our findings provide a promising approach for developing long-lifetime, multimode quantum memories.
Background Tracheobronchial adenoid cystic carcinoma (TACC) is a rare tumour. About one-third of patients miss their chance of surgery or complete resection as it is mostly detected in the advanced ...stage; hence, photon radiotherapy (RT) is used. However, the outcomes of photon RT remain unsatisfactory. Carbon ion radiotherapy (CIRT) is thought to improve the therapeutic gain ratio; however, the outcomes of CIRT in TACC are unclear. Therefore, we aimed to assess the effects and toxicities of CIRT in patients with TACC. Methods The inclusion criteria were as follows: 1) age 18-80 years; 2) Eastern Cooperative Oncology Group Performance Status 0-2; 3) histologically confirmed TACC; 4) stage III-IV disease; 5) visible primary tumour; and 6) no previous RT history. The planned prescription doses of CIRT were 66-72.6 GyE/22-23 fractions. The rates of overall survival (OS), local control (LC), and progression-free survival (PFS) were calculated using the Kaplan-Meier method. Treatment-induced toxicities and tumour response were scored according to the Common Terminology Criteria for Adverse Events and Response Evaluation Criteria in Solid Tumors, respectively. Results Eighteen patients with a median age of 48 (range 30-73) years were enrolled. The median follow-up time was 20.7 (range 5.8-44.1) months. The overall response rate was 88.2%. Five patients developed lung metastasis after 12.2-41.0 months and one of them experienced local recurrence at 31.9 months after CIRT. The rates of 2-year OS, LC, and PFS were 100, 100, and 61.4%, respectively. Except for one patient who experienced grade 4 tracheal stenosis, which was relieved after stent implantation, no other greater than or equai to3 grade toxicities were observed. Conclusions CIRT might be safe and effective in the management of TACC based on a short observation period. Further studies with more cases and longer observation are warranted. Keywords: Tracheobronchial carcinoma, Adenoid cystic carcinoma, Carbon ion radiotherapy
Despite the tremendous progress of quantum cryptography, efficient quantum communication over long distances (≥ 1000 km) remains an outstanding challenge due to fiber attenuation and operation errors ...accumulated over the entire communication distance. Quantum repeaters (QRs), as a promising approach, can overcome both photon loss and operation errors, and hence significantly speedup the communication rate. Depending on the methods used to correct loss and operation errors, all the proposed QR schemes can be classified into three categories (generations). Here we present the first systematic comparison of three generations of quantum repeaters by evaluating the cost of both temporal and physical resources, and identify the optimized quantum repeater architecture for a given set of experimental parameters for use in quantum key distribution. Our work provides a roadmap for the experimental realizations of highly efficient quantum networks over transcontinental distances.
Summary
Vermicomposting using black soldier fly (BSF) larvae (Hermetia illucens) has gradually become a promising biotechnology for waste management, but knowledge about the larvae gut microbiome is ...sparse. In this study, 16S rRNA sequencing, SourceTracker, and network analysis were leveraged to decipher the influence of larvae gut microbiome on food waste (FW) biodegradation. The microbial community structure of BSF vermicompost (BC) changed greatly after larvae inoculation, with a peak colonization traceable to gut bacteria of 66.0%. The relative abundance of 11 out of 21 metabolic function groups in BC were significantly higher than that in natural composting (NC), such as carbohydrate‐active enzymes. In addition, 36.5% of the functional genes in BC were significantly higher than those in NC. The changes of metabolic functions and functional genes were significantly correlated with the microbial succession. Moreover, the bacteria that proliferated in vermicompost, including Corynebacterium, Vagococcus, and Providencia, had strong metabolic abilities. Systematic and complex interactions between the BSF gut and BC bacteria occurred over time through invasion, altered the microbial community structure, and thus evolved into a new intermediate niche favourable for FW biodegradation. The study highlights BSF gut microbiome as an engine for FW bioconversion, which is conducive to bioproducts regeneration from wastes.
The microbial community of vermicompost changed greatly after addition of black soldier fly (BSF) larvae, and gradually became similar to that in the BSF gut. The metabolic functions of vermicompost were strengthened by the BSF larvae gut microbiome, leading to enhancing food waste biodegradation. Complex interactions occurred between the bacteria in the BSF larvae gut and the vermicompost through invasion.
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