Design of Slot Structure and Pilot Pattern for Underwater Acoustic Downlink Channel below 10kHz

Jinhui Liu,Haifeng Yu,KyungHi Chang 한국통신학회 2016 한국통신학회 학술대회논문집 Vol.2016 No.1

Though underwater acoustic (UWA) channel is the most challenging due to its time varying and frequency selective characteristics, UWA communications draw lots of attention to satisfy the increasing demand of the various applications. In this paper, for the purpose of providing high data rate and reliable services for UWA communications, slot structure as well as the pilot pattern is designed based on the UWA channel characteristics below 10 kHz. MCS level for the downlink application is also optimized by the system performance evaluation at link-level.

Investigate the Effect of Potassium on Nodule Symbiosis and Uncover an HAK/KUP/KT Member, GmHAK5, Strongly Responsive to Root Nodulation in Soybean

Liu Jianjian,Liu Jinhui,Cui Miaomiao,Chen Xiao,Liu Junli,Chen Jiadong,Chen Aiqun,Xu Guohua 한국식물학회 2022 Journal of Plant Biology Vol.65 No.6

Leguminous plants form root nodule organs with soil rhizobia bacteria, which can fix atmospheric nitrogen (N2) and supply ammonia to the host plant. It is established that the symbiotic N fixation efficiency is substantially influenced by plant nutrients, such as molybdenum (Mo), phosphorus (P), copper (Cu), and zinc (Zn). Potassium (K+) is the most abundant cation in plant cells; however, little evidence regarding the potential link between K nutrition and symbiotic N fixation efficiency is available to date. Here, we showed that K+ deficiency reduced the efficiency of symbiotic nitrogen fixation, and inoculated with rhizobia strain USDA110 could improve plant K+ acquisition. Furthermore, we identified a potassium transporter gene (GmHAK5) that was highly expressed in the root steles and in the vasculature cells of nodules. The GmHAK5 protein was localized at the plasma membrane and could rescue the growth phenotype of yeast K+ uptake-defective mutant. The results obtained from this study provides new insights for the understanding of the potential role of K+ nutrition in modulating symbiotic N fixation in soybean.

Frame Structure and OFDM Parameters Design for the Underwater Acoustic Channel

Jinhui Liu,Haifeng Yu,KyungHi Chang 한국통신학회 2015 한국통신학회 학술대회논문집 Vol.2015 No.11

Correlation between red blood cell distribution width/platelet count and prognosis of newly diagnosed diffuse large B-cell lymphoma

Xiaobo Liu,Yanliang Bai,Ying Liu,Weiya Li,Yabin Cui,Jinhui Xu,Xingjun Xiao,Xiaona Niu,Kai Sun 대한혈액학회 2023 Blood Research Vol.58 No.4

Background Red blood cell distribution width/platelet count ratio (RPR) is a reliable prognostic assessment indicator for numerous diseases. However, no studies to date have examined the relationship between RPR and the prognosis of diffuse large B-cell lymphoma (DLBCL). Therefore, this study aimed to investigate the correlation between RPR and the clinical characteristics and prognosis of patients with diffuse large B-cell lymphoma. Methods We retrospectively studied 143 patients with newly diagnosed DLBCL and used the median value as the RPR threshold. We also investigated the correlation of pretreatment RPR level with clinical characteristics and its impact on DLBCL prognosis. Results Using the median value as the cut-off, patients with DLBCL were divided into a low RPR group (<0.0549) and a high RPR group (≥0.0549). Patients in the high RPR group were older, had a later Ann Arbor stage, were prone to bone marrow invasion, and had a higher National Comprehensive Cancer Network International Prognostic Index score (P < 0.05). A survival analysis showed that progression-free survival (PFS) (P =0.003) and overall survival (OS) (P <0.0001) were significantly shorter in the high versus low RPR group. A multifactorial Cox analysis showed that bone marrow invasion and elevated lactate dehydrogenase (LDH) were separate risk factors for PFS (P <0.05), while an RPR ≥0.0549 and elevated LDH were separate risk factors for OS (P <0.05). Conclusion A high RPR (≥0.0549) in patients with newly diagnosed DLBCL is an independent risk factor for a poor prognosis.

Control stability of inverters with series‑compensated transmission lines: analysis and improvement

Qianjin Zhang,Jinhui Qian,Zhaorong Zhai,Xiaodong Liu,Sucheng Liu,Wei Fang,Hongbo Liu,Mohammad Abusara 전력전자학회 2022 JOURNAL OF POWER ELECTRONICS Vol.22 No.10

With the rapid development of renewable energy, large amounts of power need to be transmitted to load centers, and seriescapacitor compensation (SCC) plays an important role in renewable power transmission. However, it has been pointed out that SCC interacts with inverters and threatens system stability. This paper investigates the influence of SCC on inverter control, and proposes strategies for enhancing system stability based on the instability mechanism. First, the impacts of SCC on inverter current control and synchronization control are analyzed. A current control model is established by a system transfer function, and a synchronization control model focusing on transient stability is established based on the traditional synchronous reference frame phase-locked loop (SRF-PLL). Bode and nonlinear analysis methods are utilized in the stability analysis of both current control and synchronization control. It is found that SCC has little effect on inverter current control. However, it seriously affects synchronization control. SCC reduces the stability range of synchronization control, and causes system instability when there is a large frequency disturbance. In order to improve system stability, two approaches have been proposed. These approaches are optimizing a PI controller, and designing a band-pass filter (BPF) inside the PLL. Finally, simulations and experiments are presented to verify the correctness of theories.

LAB Fermentation Improves Production of Bioactive Compounds and Antioxidant Activity of Withania somnifera Extract and Its Metabolic Signatures as Revealed by LC-MS/MS

( Jinhui Yu ),( Yun Geng ),( Han Xia ),( Deyuan Ma ),( Chao Liu ),( Rina Wu ),( Junrui Wu ),( Shengbo You ),( Yuping Bi ) 한국미생물생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.4

In this study we investigated the effect of lactic acid bacteria (LAB) fermentation on the ingredients and anti-oxidant activity of Withania somnifera extract. Four strains of LAB could proliferate normally in medium containing W. somnifera extract after the pH reached 3.1~3.5. LAB fermentation increased the content of alcohols and ketones, endowing the extract with the characteristic aroma of fermentation. Compared to the control, the DPPH and ABTS free radical scavenging rates in the fermented samples were significantly improved, ranging from 48.5% to 59.6% and 1.2% to 6.4%. The content of total phenols was significantly increased by 36.1% during the fermentation of mixed bacteria. Moreover, the original composition spectrum of the extract was significantly changed while the differentially accumulated metabolites (DAMs) were closely related to bile secretion, tryptophan metabolism and purine metabolism. Therefore, LAB fermentation can be used as a promising way to improve the flavor and bioactivity of the extracts of W. somnifera, making the ferments more attractive for use as functional food.

Efficacy and safety of herbal medicine (Lianhuaqingwen) for treating COVID-19: A systematic review and meta-analysis

Ming Liu,Ya Gao,Yuan Yuan,Kelu Yang,Shuzhen Shi,Jinhui Tian,Junhua Zhang 한국한의학연구원 2021 Integrative Medicine Research Vol.10 No.1

Background: Lianhuaqingwen (LH) has been proven effective for influenza. However, the promotion of LH for the treatment of patients with COVID-19 remains controversial. Therefore, our study aimed to assess the efficacy and safety of Lianhuaqingwen (LH) in treating patients with COVID-19 by a systematic review and meta-analysis. Methods: We conducted the literature search using six electronic databases from December 1, 2019, to June 2, 2020. Cochrane Risk of Bias tool was used to assess the quality of randomized controlled trials. Newcastle-Ottawa Scale was used to assess the quality of case control studies. Agency for Healthcare Research and Quality checklist was used to assess the quality of case series. All analyses were conducted by RevMan 5.3. For outcomes that could not be meta-analyzed were performed a descriptive analysis. Results: Eight studies with 924 patients were included. Three studies were RCTs, three were case control studies, and two were case series. The quality of the included studies was poor. Compared with patients treated by conventional treatment, patients treated by LH combined with conventional treatment have a higher overall effective rate (RR = 1.16, 95%CIs: 1.04∼1.30, P = 0.01) and CT recovery rate (RR=1.21, 95%CIs: 1.02∼1.43, P = 0.03). Patients of LH groups have a lower incidence of diarrhea (5.6% vs.13.4%), and have statistically significant (P = 0.026). But the rate of abnormal liver function in the combined medication group is higher than that in the single LH group. Conclusion: LH combined with conventional treatment seems to be more effective for patients with mild or ordinary COVID-19.

Novel Mutations in CYP51B from Penicillium digitatum Involved in Prochloraz Resistance

Jinlong Wang,Jinhui Yu,Jing Liu,Yongze Yuan,Na Li,Muqing He,Ting Qi,Geng Hui,Li Xiong,Deli Liu 한국미생물학회 2014 The journal of microbiology Vol.52 No.9

Green mold caused by Penicillium digitatum is one of themost serious postharvest diseases of citrus fruit, and it isubiquitous in all citrus growing regions in the world. Sterol14α-demethylase (CYP51) is one of the key enzymes of sterolbiosynthesis in the biological kingdom and a prime targetof antifungal drugs. Mutations in CYP51s have been foundto be correlated with resistance to azole fungicides in manyfungal species. To investigate the mechanism of resistance toprochloraz (PRC) in P. digitatum, the PRC sensitivity wasdetermined in vitro in this study to assess the sensitivity of78 P. digitatum isolates collected in Hubei province. Theresults showed that 25 isolates were prochloraz-resistant(PRC-R), including six high-resistant (HR) strains, twelvemedium-resistant (MR) and seven low-resistant (LR) strains. A sequence analysis showed no consistent point mutationsof PdCYP51A in the PRC-R strains, but four substitutionsof CYP51B were found, Q309H in LR strains, Y136H andQ309H in HR strains, and G459S and F506I in MR strains,which corresponded to the four sensitivity levels. Based onthe sequence alignment analysis and homology modelingfollowed by the molecular docking of the PdCYP51B protein,the potential correlation between the mutations and PRC resistance is proposed.

Fatigue life prediction model of Ti-6Al-4V alloy forgings based on forging process parameters

Xiurong Fang,Jinhui Yang,Liu Liu,Ziliang Wang 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.7

Forging processing parameters have an important impact on the fatigue resistance of metal in the process of plastic forming, which directly threatens the safety and reliability of the metal’s service. Taking Ti-6Al-4V alloy as the research object, this study investigates the effect of processing parameters, including forging temperature and deformation degree on the Young's modulus, ultimate tensile strength, and reduction of fracture area on the basis of the mechanical property testing of Ti-6Al-4V alloy forgings and obtains the regression equations at the same time. Combined with the existing stress fatigue life prediction formula, the fatigue life prediction based on forging process parameters is realized. Results show that forging temperature and deformation degree have a significant effect on fatigue life. The forging processing parameters of Ti-6Al-4V alloy with optimum fatigue life are as follows: 985 °C-990 °C forging temperature and 46 %-50 % deformation degree.

A novel and environmentally friendly SO4 2- /CeO2 catalyst for the selective catalytic reduction of NO with NH3

Qiulin Zhang,Jinhui Zhang,Zhongxian Song,Ping Ning,,Hao Li,Xin Liu 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-

The SO42 /CeO2 catalyst showed excellent catalytic activity and remarkable resistance to H2O and SO2for the selective catalytic reduction of NO with NH3. The SO42 /CeO2 catalyst with 2.5 wt.% SO42 contentexhibited more than 90% of NO conversion at 229–485 8C. The characterization results revealed that theSO42 species were highly dispersed on the surface of CeO2 in the SO42 /CeO2 catalyst. Moreover, theaddition of SO42 into CeO2 obviously increased the surface Lewis and Brønsted acid sites, and it wasfound that only stable (1 1 1) lattice planes of CeO2 can be observed on the SO42 /CeO2 catalyst.