浅议我校“校企合作”的模式与途径

校企合作模式,是职业教育中探索出来的一条新道路。我校职业教育经过多年的探索和实践,积累了丰富的经验。采取"请进来"、"走出去"、"开设订单班"等校企合作方式,先后与深圳富士康科技集团、德昌电机(深圳)有限公司、东莞三星电机有限公司、上海京瓷电子有限公司、中央国家机关后勤干部培训中心培训部、湖南省丰彩机械有限公司、双峰县兴昂国际有限公司、双峰县海螺集团、双峰县农友机械有限公司等20多家企业签订了校企全作协议,建立了固定的校内外实践教学基地。通过多种校企合作途径取得了"三赢",即学生赢、企业赢、学校赢,学校的办学质量和声誉得到了社会与学生家长的广泛认可。

The role of shaded cocoa plantations in the maintenance of epiphytic orchids and their interactions with phorophytes

Aims Habitat loss and fragmentation are the main threats to biodiversity in tropical forests.Agroecosystems such as shaded cocoa plantations(SCP)provide refuge for tropical forest biota.However,it is poorly known whether the interspecific ecological interactions are also maintained in these transformed habitats.We evaluated the diversity,reproductive status and photosynthetic metabolism(CAM or C3)of the epiphytic orchid community,and their interactions with host trees(phorophytes)in SCP compared to tropical rainforest(TRF).Methods In southeastern Mexico,three sites each in TRF and SCP were studied,with four 400 m2 plots established at each site to record all orchids and their phorophytes.We determined the reproductive(adult)or non-reproductive(juvenile)status of each orchid individual in relation to the presence or absence,respectively,of flowers/fruits(or remnants),and assigned the photosynthetic pathway of each orchid species based in literature.We used true diversity and ecological networks approaches to analyze orchid diversity and orchid–phorophyte interactions,respectively.Important Findings In total,607 individuals belonging to 47 orchid species were recorded.Orchid diversity was higher in TRF(19 effective species)than in SCP(11 effective species)and only seven species were shared between the two habitats.CAM orchid species were more frequent in SCP(53%)than in TRF(14%).At the community level the proportion of non-reproductive and reproductive orchid species and the nested structure and specialization level of the TRF orchid–phorophyte network were maintained in SCP.However,only a subset of TRF epiphytic orchids remains in SCP,highlighting the importance of protecting TRF.Despite this difference,shaded agroecosystems such as SCP can maintain some of the diversity and functions of natural forests,since the SCP epiphytic orchid community,mainly composed of CAM species,and its phorophytes constitute a nested interaction network,which would confer robustness to disturbances.

Scutellaria baicalensis, the golden herb from the garden of Chinese medicinal plants

Scutellaria baicalensis Georgi, or Chinese skullcap, has been widely used as a medicinal plant in China for thousands of years, where the preparation from its roots is called Huang-Qin. It has been applied in the treatment of diarrhea, dysentery, hypertension, hemorrhaging, insomnia,inflammation and respiratory infections. Flavones such as baicalin, wogonoside and their aglycones baicalein wogonin are the major bioactive compounds extracted from the root of S. baicalensis. These flavones have been reported to have various pharmacological functions, including anti-cancer,hepatoprotection, antibacterial and antiviral, antioxidant,anticonvulsant and neuroprotective effects. In this review,we focus on clinical applications and the pharmacological properties of the medicinal plant and the flavones extracted from it. We also describe biotechnological and metabolic methods that have been used to elucidate the biosynthetic pathways of the bioactive compounds in Scutellaria.