The Wireless Body Area Network (WBAN) is a key part of the wearable monitoring technologies, which has many communication technologies to choose from, like Bluetooth, ZigBee, Ultra Wideband, and Wireless Human Body Communication (WHBC). As for the WHBC developed in recent years, it is worthy to be further studied. The WHBC has a strong momentum of growth and a natural advantage in the formation of WBAN. In this paper, we first briefly describe the technical background of WHBC, then introduce theoretical model of human-channel communication and digital transmission machine based on human channel. And finally we analyze various of the interference of the WHBC and show the AFH (Adaptive Frequency Hopping) technology which can effectively deal with the interference.
Computer Communication Networks ; Humans ; Models, Theoretical ; Wireless Technology

This paper introduces several test methods of characteristics of alarm indicator lights which can be used in the medical alarm system to verify the compliance of YY 0709-2009. These methods include the direct measurement of the pulse current supply of the alarm signals, image analysing of a video and reception by photoelectric sensor. After the comparation of the advantages and disadvantages among these methods, this paper proposes a new method of signal reception. This method which used a silicon photocell as the sensor with light filter in its front, and amplified circuit in the output end then used an oscillograph as the reviewer, has resolved the testing difficulties of the flashing signal simulating by LCD, and can be applied to test the alarm indicator lights in any medical electrical equipment.
Clinical Alarms ; Equipment Design ; Signal Processing, Computer-Assisted

Objective To investigate the epidemiological trend of human intestinal helminth infections in Yancheng City,Ji?angsu Province from 2006 to 2015,so as to provide the evidence for formulating further control strategies. Methods The sur?veillance data of human intestinal helminth infections were collected and analyzed in Yancheng City from 2006 to 2015. Re?sults From 2006 to 2015,110 746 person?times of residents in Yancheng City were surveyed in Yancheng City,and 1 732 samples were positive of human intestinal helminth infections. The infection rate of human intestinal helminthes was highest in 2006[4.59%(410/8 941)],and lowest in 2013[0.19%(23/12 165)]. The infection rate of human intestinal helminthes was significantly decreased over time(χ2=27.78,P<0.001). The human infection rates of Ascaris lumbricoides,hook worm and Trichuris trichura were all decreased over time(Z=-27.75,-22.23 and-16.17,all P<0.001)from 2006 to 2015,with the re?duction rates of 96.57%,92.31%and 96.47%,respectively. The average EPG of A. lumbricoides,hook worm and T. trichura were 2 534,360 and 154 respectively,and 1 694(97.81%)cases were light infections. Totally 1 174 cases of Enterobius vermic?ularis were found in children under 12 years old,and the cases were decreased over time(χ2 =12.46,P<0.001). Conclu?sions The infection rate of human intestinal helminthes in Yancheng City decreases over time from 2006 to 2015,and the con?trol work is effective. The control work of focus groups and environmental management and health education should be strength?ened in the future.

Macrophages are major effecter cells of nonspecific immune response,the polarization of which plays a great role in inflammation,repairing and angiogenesis.According to functional phenotypes,macrophages can be polarized to classically activated type (M1),which could promote angiogenesis,and alternatively activated type (M2),which could inhibit angiogenesis.The proportion of M1/M2 could modulate the growth of choroidal neovascularization (CNV).Under the conditions of aging and injury within the retina,macrophages may polarize to M2,which could generate several proangiogenic factors,initiating and promoting the formation of angiogenesis and fibrous scar.Therefore,regulation of macrophage polarization is expected to inhibit angiogenesis and provide new insight for treatment of CNV.

Objective:To observe the effect of Er:YAG laser on the proliferation of human periodontal ligament fibroblasts(hP-DLFs).Methods:Human periodontal ligament fibroblasts were cultured in vitro and identified by immunohistochemistry.The cells of 5th passage were divided into 5 groups.The cells in group A without treatment were used as the controls,in group B,C,D and E were treated with Er:YAG laser of 10 Hz at 50 mJ,100 mJ,150 mJ and E-200 mJ for 1 s respectively.The proliferation of the cells was examined on day 1,3,5,7,9 by CCK-8.Results:The proliferation of hPDLFs in group B,C,D and E increased more than that in group A(P <0.05)5 d after Er:YAG laser radiation.Conclusion:Low intensity of Er:YAG laser radiation can promote the prolifera-tion of human periodontal ligament fibroblasts.

Patients with HER-2-positive advanced breast cancer were associated with poor prognosis. Meanwhile, HER-2-targeted ther-apy has dramatically improved survival and prognosis among breast cancer patients. Over the years, multiple HER-2-targeting drugs stepped into clinical practice, and the targeted agents are now considered as the standard of care in the first-line setting and beyond. This review basically summarizes the importance of HER-2-targeted therapy, the significance of the clinical trial results, and the clinical practice guidelines for the management of patients with HER-2-positive advanced breast cancer.

MicroRNA-506 (miRNA-506) is located in the X chromosome and influences various processes, such as cell proliferation, apoptosis, senescence, cell cycle, cell differentiation, epithelial-to-mesenchymal transition, angiogenesis, invasion, and metastasis, through post-transcriptional regulation of its targets. Recent studies have shown that miRNA-506 plays an important role in tumorigen-esis and progression of many types of tumors. In vitro and in vivo experiments revealed that miRNA-506 suppresses progression of sev-eral tumors and promotes response of tumor cells to chemotherapy. However, miRNA-506 plays different roles in different tumors. This review summarizes the functions and mechanisms of miRNA-506 in different tumors to identify a new target for the targeted ther-apy of certain tumors.

0.05).Conclusions This study shows that in severe acute biliary pancreatitis patiens with biliary tract obstruction, emergency endoscopic therapy should be performed within 48 hours from the onset of symptoms; patients with mild acute biliary pancreatitis shoud also undergo prompt endoscopic therapy after ineffective conservative management or appearance of symptoms of acute biliary tract infection.

OBJECTIVE:To improve the quality standard of Naoliqing capsule. METHODS: The Sus scrofa domestica and Achyranthes bidentata in Naoliqing capsule were identified by TLC, and the content of oleanolic acid was determined by HPLC. RESULTS: The characteristic TLC spots of the Sus scrofa domestica and Achyranthes bidentata in Naoliqing capsule were detected. The linear range of oleanolic acid was 0.5～7.5 ?g(r=0.999 6) with an average recovery of 97.43%(RSD=1.94%,n=6). CONCLUSION: The results are conducive to the improvement of the quality standard of Naoliqing capsule.

The case of LI Li-yun involves the right of life,the right of informed consent and the special right to intervene from the inspection of right.By analyzing the concepts of three kinds of rights and discussing the conflicts between the right of informed consent,the right of life,and the special right to intervene,it presents the principles of equity of right and the measures of legal insurance which are essential conditions to end this kind of tragedy.