Demographic potential of the pupal parasitoid Trichopria drosophilae (Hymenoptera: Diapriidae) reared on Drosophila suzukii (Diptera: Drosophilidae)

Cheng-Jie Zhu,Jing Li,Huan Wang,Min Zhang,Hao-Yuan Hu 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.3

Parasitoids represent a potential tool to control the invasive spotted wing drosophila, Drosophila suzukii, which has invaded Europe and America, recently. A good example is the pupal parasitoid, Trichopria drosophilae, would be an effective biocontrol agent. Populations of D. suzukii, and T. drosophilae were collected from a blueberry orchard in East China and reared in the laboratory at 25 °C. Life table and population growth data for T. drosophilae were obtained using D. suzukii pupae as a host. Mean adult longevity was 22.40 d and 26.45 d, for females and males respectively. The mean oviposition period was 18.20 d. The daily mean parasitization rate was 9.47% per female when 30 hosts were daily provided. The total number of T. drosophilae offspring throughout a lifetime was 63.45 per female, and the female offspring proportion was 65.06%. The intrinsic rate of natural increase and the finite rate of increase were 0.18 and 1.19, respectively. The generation time and the population doubling time were 21.29 d and 3.91 d, respectively. Our results suggest that T. drosophilae population differed among populations in population growth parameters, and those from China also has the parasitism potential to control D. suzukii.

Konjac Glucomannan Derived Carbon Aerogels for Multifunctional Applications

Jie Lian,Jiwei Li,Liang Wang,Ru Cheng,Xiuquan Tian,Xue Li,Jian Zhou,Tao Duan,Wenkun Zhu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.10

Environmental and energy issues have always been a hot topic of global research. Oil leakage has caused great damage to the environment, affecting a wide area and it is difficult to clean up. In most cases, carbon-based adsorbents are typically utilized to remove oil spills because of their economic benefits and high adsorbent efficiency. At the same time, its excellent material properties can also be used for the preparation of supercapacitors. In this paper, the carbon aerogels were prepared by the one-step method. The prepared materials endowed a 3D network structure with a huge number of micropores and mesoporous, and the material is light-weight, stable, hydrophobic and has affinity for oil (17.02 g/g) to the KGM carbon aerogel. Through the physicchemical characterization, the KGM carbon aerogel shows specific surface area is 689m2/g, high water contact angle (136.64°) and excellent reusability (more than 15 cycle times). In addition, we also discussed the electrochemical properties of the material and obtained the specific electrical capacity of 139 F/g under the condition of 1 A/g.

Perforation optimization of hydraulic fracturing of oil and gas well

Zhu, Hai Yan,Deng, Jin Gen,Chen, Zi Jian,An, Feng Chen,Liu, Shu Jie,Peng, Cheng Yong,Wen, Min,Dong, Guang Techno-Press 2013 Geomechanics & engineering Vol.5 No.5

Considering the influences of fluid penetration, casing, excavation processes of wellbore and perforation tunnels, the seepage-deformation finite element model of oil and gas well coupled with perforating technique is established using the tensile strength failure criterion, in which the user-defined subroutine is developed to investigate the dynamic evolvement of the reservoir porosity and permeability. The results show that the increases of perforation angle and decreases of perforation density lead to a higher fracture initiation pressure, while the changes of the perforation diameter and length have no evident influences on the fracture initiation pressure. As for initiation location for the fracture in wellbore, it is on the wellbore face while considering the presence of the casing. By contrast, the fractures firstly initiate on the root of the tunnels without considering casing. Besides, the initial fracture position is also related with the perforation angle. The fracture initiation position is located in the point far away from the wellbore face, when the perforation angle is around $30^{\circ}$; however, when the perforation angle is increased to $45^{\circ}$, a plane fracture is initiated from the wellbore face in the maximum horizontal stress direction; no fractures was found around perforation tunnels, when the angel is close to $90^{\circ}$. The results have been successfully applied in an oilfield, with the error of only 1.1% comparing the fracture initiation pressure simulated with the one from on-site experiment.

Bicluster and Pathway Enrichment Analysis of HCV-induced Cirrhosis and Hepatocellular Carcinoma

Cheng, Peng,Cheng, You,Su, Mei X.,Li, Dong,Zhao, Guo Z.,Gao, Hui,Li, Yan,Zhu, Jie Y.,Li, Hua,Zhang, Tao Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8

Background: Hepatocellular carcinoma (HCC) is the sixth most common cancer worldwide and the most common form of liver cancer. However, while it is associated frequently with hepatitis C virus (HCV) there is only an elementary understanding of its molecular pathogenesis. Methods: To gain insight into the molecular mechanisms of HCV-induced hepatocarcinogenesis, we performed microarray analysis on 75 surgical liver samples from 48 HCV-infected patients. Results: There were 395 differentially expressed geness between cirrhotic samples and HCC samples. Of these, 125 genes were up-regulated and 270 genes were down-regulated. We performed pathway enrichment analysis and screened as described previously. Conclusions: The differentially expressed genes might be involved in hepatocarcinogenesis through upregulating the pathways of ECM-receptor interaction, focal adhesion, cell adhesion molecules and other cancer-related pathways, and downregulating the pathways of "complement and coagulation cascades". We hope our results could aid in seeking of therapeutic targets for HCV-induced hepatocellular carcinoma.

An improved SCGM(1,m) model for multi-point deformation analysis

Qi-jie Wang,Chang-cheng Wang,Rong-an Xie,Xin-qing Zhang,Jian-jun Zhu 한국지질과학협의회 2014 Geosciences Journal Vol.18 No.4

Considering the deformation of discrete monitoringpoints within the same deformable body usually have similar physicalproperties and tend to undergoing identical dynamic process, jointmodelling of the deformation processes of these points in time domainare expected to generate better results. Yin et al. (1997) first extendedthe multi-variable grey model-system cloud grey model SCGM(1,m),with obviously superior modelling mechanism than single-variablegrey model, to multi-point deformation modelling. However, thismodel is still not widely recognized and its applications remain verylimited in the field of deformation analysis. The objective of this studyis to demonstrate the capability of the SCGM(1,m) model, to presenttwo revisions to further improve the performance of the model andto draw more attention to the community of deformation analysis. We first introduce the principles of the SCGM(1,m) model in theanalysis and prediction of deformation surveys. Two practicaltechniques, namely residuals re-modelling and linear regressionadjustment, are then presented to improve the SCGM(1,m) model. Combined with slope monitoring data, the modelling with the originaland the improved SCGM(1,m) models by residuals re-modellingand linear regression adjustment are illustrated. The mean relativeprediction errors decrease from 5.89% to 3.54% and 2.69%, whenthe two refining techniques are applied, respectively, indicating relativeimprovements of 39.9% and 54.3%.

AN AUTOMATIC VIDEO ANALYTICS APPROACH TO EXAMINE THE EFFECTS OF VIDEO CONTENT FEATURES ON AUDIENCE ENGAGEMENT

Jingjie Zhu,Mingming Cheng,Ying Wang,Jie Tan 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07

While there is an increasing number of studies highlighting the power of videos in influencing audience attitudes and behavior, academic research in tourism is largely behind due to the methodological challenges of analyzing unstructured video data. This study adopts an automatic video analytics approach to examine the relationship between content features of pro-environmental videos and audience engagement in tourism. Artificial intelligence was used to extract video content features by detecting scenes and shots as well as labels (e.g., trees). Our findings suggest that there exists an inverted U-shape relationship between video informativeness and audience engagement. This study makes significant theoretical and methodological contributions to extant tourism literature by theoretically explaining and empirically testing how video content features influence audience engagement in pro-environmental video communications in tourism.

Research on Process Parameters for Recycling CF/EP Composites by Thermal Excitation of Oxide Semiconductor

Huanbo Cheng,Yancheng Zhu,Ziqiang Zhou,Yu Sun,Jie Zhang 한국섬유공학회 2020 Fibers and polymers Vol.21 No.4

There has a great economic and environmental significance for recycling high performances carbon fibers fromthe waste carbon fiber reinforced polymers. This paper presented a novel method for recycling carbon fiber (CF)/epoxy resin(EP) composites by thermal excitation oxide semiconductor; the effects of process parameters including the temperature,processing time, concentration and flow of O2 on decomposition rate of resin matrix was analyzed; through some methods ofanalysis and testing such as micro-morphology, monofilament tensile strength, Raman spectra, the effects of processparameters on morphology, mechanical property and surface chemistry of the recycle carbon fibers were investigated; thecomponents of the gas products were investigated by gas chromatography. The research findings provided theoreticalfoundations for estimating the process parameters and understanding the general law of resin matrix decomposition.

In vitro stability evaluation of coated lipase

Liu, Lu Jie,Zhu, Jia,Wang, Bin,Cheng, Chu,Du, Yong Jie,Wang, Min Qi Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.2

Objective: The study was conducted to evaluate the stability of commercial coated lipase (CT-LIP) in vitro. Methods: The capsules were tested under different conditions with a range of temperature, pH, dry heat treatment and steaming treatment, simulated gastric fluid (SGF) and simulated intestinal fluid (SIF) in this work, respectively. Free lipase (uncoated lipase, UC-LIP) was the control group. Lipase relative activities measured in various treatments were used as a reference frame to characterize the stability. Results: The lipase activities were decreased with increasing temperatures (p<0.05), and there was a markedly decline (p<0.01) in lipase comparative activities of UC-LIP at $80^{\circ}C$ compared with CT-LIP group. Higher relative activities of lipase were observed in CT-LIP group compared with the free one under acidic ambient (pH 3 to 7) and an alkaline medium (pH 8 to 12). Residual lipase activities of CT-LIP group were increased (p<0.05) by 5.67% and 35.60% in dry heat and hydrothermal treatments, respectively. The lipase relative activity profile of CT-LIP was raised at first and dropped subsequently (p<0.05) compared with constantly reduced tendency of UC-LIP exposed to both SGF and SIF. Conclusion: The results suggest that the CT-LIP possesses relatively higher stability in comparison with the UC-LIP in vitro. The CT-LIP could retain the potential property to provide sustained release of lipase and thus improved its bioavailability in the gastrointestinal tract.

Taguchi Approach for Anti-heat Stress Prescription Compatibility in Mice Spleen Lymphocytes In Vitro

Xiao-yu Zhu,Gui-lin Cheng,Feng-hua Liu,Jin Yu,Yu-jie Wang,Tong-quan Yu,Jian-qin Xu,Ming Wang 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.7

Heat stress (HS) may induce immunosuppression as well as inhibit the proliferation of lymphocytes. This study evaluated the effects on immune function of our prescription on splenic lymphocytes under HS as well as its compatibility. The effects of four herbal extracts from Agastache rugosa, Atractylodes lancea, Cortex Phellodendri, and Gypsum Fibrosum on heat treated splenic lymphocytes were investigated and the compatibility of the prescription was also explored by using the Taguchi method. This study revealed changes in proliferation by traditional Chinese medicines of splenic lymphocytes after HS. Proliferation in the HS group was significantly lower than the control group. Under HS, the effects of higher concentrations of Agastache rugosa (100 and 200 μg/mL), Atractylodes lancea (100 and 200 μg/mL), Cortex Phellodendri (50 and 100 μg/mL) and Gypsum Fibrosum (100 and 200 μg/mL) caused a significant increase on ConA/LPS-induced proliferation of lymphocytes than lower concentrations. We, therefore, conclude that the prescription of traditional Chinese medicines may recover splenic lymphocytes from the immunosuppression induced by HS. The Taguchi design, which allows rapid and high efficiency for the selection of the best conditions for our prescription on HS-treated splenic lymphocytes, demonstrated that Agastache rugosa (200 μg/mL), Atractylodes lancea (200 μg/mL), Cortex Phellodendri (100 μg/mL) and Gypsum Fibrosum (100 μg/mL)were the optimal conditions for the prescription. The validation experiment confirmed that our composition in optimum extraction conditions enhanced effects on ConA or LPS-stimulated lymphocytes under HS. The results showed that the Taguchi optimization approach is a suitable method for optimization of the composition of prescription.

Phenylpropanoids and Lignanoids from Euonymus acanthocarpus

Jia Xian Zhu,Hui Zi Jin,Jie Ren,Jiang Jiang Qin,Xiangrong Cheng,Qi Zeng,Fei Zhang,Shi Kai Yan,Wei Dong Zhang 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.10

A new phenylpropanoid derivative (1), along with five phenylpropanoids (2-6), two monoepoxy lignans (8-9), one bisepoxy lignan (10), two cyclolignans (11-12), six neolignans (7, 13-17), two mixed lignan-neolignans (18-19), two lignan glycosides (20-21), and four flavonolignans (22-25), were isolated from the stems and twigs of Euonymus acanthocarpus. Compounds 2-3, 6-8, 12,and 14-25 were obtained from Celastraceae family for the first time, and compounds 5 and 9 were isolated from Euonymus genus for the first time. All the compounds were tested for cytotoxicity against SK-OV-3 and MCG-803 human tumor cell lines. Compounds 3, 10, 12, and 18 showed weak cytotoxicity against SK-OV-3 cell line, and compounds 3-4, 10-13, and 19 showed weak cytotoxicity against MCG-803 cell line.