The Influence of Different Exercise Modes on College Students’ Cardiopulmonary Fitness

Wu, Dezhi(띠즈우),Han, Hanjun(한준한),Sun, Jingquan(선징콴) 한국웰니스학회 2019 한국웰니스학회지 Vol.14 No.3

이 연구는 8주간의 고강도 간헐적 훈련(HIIT)과 중강도 연속 훈련(MICT)과 태극권 운동(TCFR)이 심혈관 건강에 미치는 영향을 조사했다. 60명의 피실험자가 연구에 참여하였고, 세 그룹의 45명은 주당 3회, 회당 50분씩, 총 8주 동안 총 24번의 운동프로그램을 완료했다. 대조그룹(CON)은 운동프로그램에 참여하지 않았다. 최대산소섭취량(VO2max) 측정 후, 키, 체중, 안정시 심박수(HR)가 측정되었고, 개별적 운동 프로그램이 설정되었다. 각 운동 그룹은 연구 목적에 필요한 운동프로그램에 참여하였다. 훈련 2, 4, 6, 8주에 VO2max와 심박수를 측정하였다. 3개의 다른 운동 훈련 방법은 VO2max (HIIT+6.92%, MICT+10%, TCFR+10.4%)의 증가, 안정시 HR (HIIT-6%, MICT-3% 운동-5.4%)의 감소, 운동부하검사 중 첫 번째 부하 직후 HR(HIIT+18.7%, MICT+8%, TCFR+11.89%)의 증가, 운동부하검사 중 두번째 부하 직후(HIIT+17.51%, MICT+7.24% TCFR+9.37%)의 증가를 보였다. TCFR은 VO2max를 증가시키고, 심박수를 줄이며, 심폐 기능을 향상시켰다. HIIT는 MICT와 TCFR보다 VO2max를 향상시키고, 안정시 심박수를 줄이며, 심폐 기능을 향상시켰다. To observe the effects of 8week high intensity intermittent training(HIIT), moderate intensity continuous training(MICT), and Tai Chi fitness running(TCFR) on cardiopulmonary fitness. We recruited 60 subjects in this study. 45 in the intervention group completed 24 intervention training sessions(3 times a week, 50 min each time) over 8 weeks. and 15 in the control group(CON), did not perform the exercise. After the baselinemaximal oxygen uptake(VO2max), height, weight, and resting heart rate(HR) Values were determined, the HIIT, MICT, and TCFR groups performed the HIIT, MICT, and TCFR groups performed the HITT, MICT, and TCFR exercise programs respectively VO2max and HR were measured at the 2<SUP>nd</SUP>, 4<SUP>th</SUP>, 6<SUP>th</SUP>, and 8<SUP>th</SUP> training weeks The three different training methods have obvious effects on improving VO2max(HIIT+6.92%, MICT+10%, TCFR+10.4%), reducing the resting HR(HIIT-6%, MICT-3%, TCFR-5.4%), increasing the heart rate immediately after the first load (HIIT+18.7%, MICT+8%, TCFR+11.89%) as well as increasing the heart rate immediately after the second load(HIIT+17.51%, MICT+7.24%, TCFR+9.37%). The three different training methods markedly improved VO2max(HIIT-6.92%, MICT+10%, TCFR-10.4%), decreased resting HR(HIIT-6%, MICT-3%, TCFR-5.4%), increased HR immediately after the first load(HIIT-18.7%, MICT-8%, TCFR-11.89%) and increased HR immediately after the second load(HIIT+17.51%, MICT+7.24%, TCFR+9.37%). TCFR is more effective than traditional MICT at increasing VO2max, decreasing resting HR, and improving cardiopulmonary fitness. HIIT has tremendous ability to increase VO2max, decrease resting HR, and improve cardiopulmonary fitness. HIIT has tremendous ability to invrease VO2max, resting HR, and cardiopulmonary fitness.

Effects of 5-aminolevulinic Acid on the Bioactive Compounds and Seedling Growth of Oilseed Rape (Brassica napus L.)

Antony Maodzeka,Qian Wang,Xiaoyang Chen,Nazim Hussain,Dezhi Wu,Lixi Jiang 한국식물학회 2019 Journal of Plant Biology Vol.62 No.3

Application of 5-Aminolevulinic acid (ALA) toplants not only affects their growth, but also influences thenutritional values of plant organs. Oilseed rape (Brassicanapus L.) is an important source of vegetable oil and variouscompounds benefiting human health. However, limitedinformation is available regarding the effect of ALA on thegrowth of this important crop. Here, we investigated theconsequence of ALA application on oilseed rape seedlings. We found that moderate ALA concentrations (0.5 or 1 mg/L)caused an increase in the dry weight of the seedling biomassand the contents of various bioactive compounds, i.e. solublesugar, phenolic compounds, ascorbate, and glucosinolatesetc, and the upregulated expressional levels of the genesencoding RuBisCO, namely, BnRBCL and BnRBCS, andother genes such as BnUGT79B1, BnMYB12 and MYB28that regulate the synthesis of phenolic compounds andglucosinolates respectively. On the other hand, high ALAconcentrations (5 and 10 mg/L) gave rise to oxidative stressthat negatively affected oilseed rape growth, and causeddeleterious effects by reducing various bioactive compounds,but increasing tocopherols that may serve as a stress mitigatoryagent. With the high ALA concentrations, the ultrastructureof chloroplasts was notably damaged, featured with largestarch grains and fewer plastoglobules.

Numerical simulation of the influence of over fire air position on the combustion in a single furnace boiler with dual circle firing

Hiu Liu,Nana Xin,Qingxi Cao,Long Sha,Dezhi Sun,Shaohua Wu 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.4

The Computational fluid dynamics (CFD) code PHOENICS is applied to simulate and evaluate the combustion process within the furnace of a 1,000MW dual circle tangential firing single furnace lignite-fired ultra supercritical (USC) boiler. The dependence on overfire air (OFA) positioning on the combustion process is studied. The results show that the highest temperature appears on the upside of the burner zone close to the front wall, and the high temperature zone rises with elevated OFA positions. However, the temperature field distributions are similar despite differing OFA positions. The char content near the rear wall is higher than that near the front wall, and below the furnace arch, coal particles concentrate towards the front wall. Also with elevated OFA positions, nitrogen oxide (NOx) concentrations at the outlet fall, but char content increases. In regard to NOx emission and char burnout, the suggested optimal distance from the OFA center to the center of the uppermost primary air nozzle should be 6 meters.

Concentrated Multi-nozzle Electrospinning

Yuekun Zheng,Huatang Cao,Zhou Zhou,Xuecui Mei,Lingke Yu,Xiaojun Chen,Gonghan He,Yang Zhao,Dezhi Wu,Daoheng Sun 한국섬유공학회 2019 Fibers and polymers Vol.20 No.6

The multi-nozzle electrospinning is under extensive investigations because it is an easy way to enhance theproductivity and also feasible to produce special structure fibers such as core-shell fibers and to fabricate composite fibers ofthose polymers that cannot form blend solution in common solvent. Control over the multi-nozzle electrospinning fibersdeposition has attracted increasing attentions. The most common method was to use the auxiliary electrode. However, theconcentrated effect of the works of control multi-nozzle electrospinning deposit was inconspicuous. To enhance thecontrolling of multi-nozzle electrospinning deposition, a set-up based oppositely charged electrospinning was designed. Inthis set-up the air flow was used to transport neutralized nanofibers. This electrospinning method was named oppositelycharged and air auxiliary electrospinning (OCAAES). The capacity of OCAAES in deposition area and pattern controllingwere investigated. By the OCAAES, concentrated and several patterned nanofibers deposition were fabricated. Resultsshowed that nanofiber deposition area and pattern of multi-nozzle electrospinning could be controlled actively, and nanofiberdeposition could be fabricated in a quick thickening rate.

Mangiferin loaded magnetic PCEC microspheres: preparation, characterization and antitumor activity studies in vitro

WenJing Xiao,Jun Hou,Jie Ma,BoTao Yu,JianDong Ren,WeiHua Jin,Juan Wu,DeZhi Zheng,KaiHua Fan 대한약학회 2021 Archives of Pharmacal Research Vol.44 No.8

Mangiferin is a promising effective chemopreventiveagent against various tumors. However, itsclinical use is limited by poor water solubility and lowbioavailability. In this article, mangiferin loaded magneticPCEC microspheres (MG-MS) were designed, characterizedand the antitumor activity of MG-MS was evaluatedin vitro. The magnetic nanoparticles (MNP) were synthesizedvia the high-temperature reaction of ironacetylacetonate in phenyl ether in the presence of oleic acidand oleylamine. Poly (ε-caprolactone)-poly (ethyleneglycol)-poly (ε-caprolactone) (PCL-PEG-PCL, PCEC)copolymers were formed by ring-opening copolymerizationof ε-CL initiated by PEG-diol using Sn(Oct)2 as acatalyst and MG-MS were prepared by solvent diffusionmethod. MNP, PCEC copolymer, and MG-MS werecharacterized by GPC, TEM, XRD, FT-IR, 1H-NMP andMalvern Laser Particle Sizer. Meanwhile, the antiproliferativeactivity in vitro and in vitro release behavior of thismicrospheres were studied in detail. The results indicatethat the obtained magnetic microspheres might have greatpotential as an effective carrier for mangiferin used incancer chemotherapy.