A novel phorbol ester from Excoecaria agallocha

The novel phorbol ester 12-deoxyphorbol 13-(3E,5E-decadienoate) [1] was isolated as the anti-HIV principle of Excoecaria agallocha leaves and stems collected in northwest Australia. The structure was determined by spectral means. Compound 1 was also a potent displacer of [3H]-phorbol dibutyrate from rat brain membranes.     

New technique for lesser saphenous vein harvesting

A new technique using the Thompson self-retaining retractor system (Thompson Surgical Instruments, Inc, Traverse City, MI) to harvest lesser saphenous veins is presented. This modification, used in 10 patients undergoing redo myocardial revascularization, provided a rapid, comfortable, and convenient method for harvesting lesser saphenous veins.     

SPECT diagnosis of Creutzfeld-Jacob disease

SPECT with 99mTc-HMPAO was performed on a 65-yr-old patient with Creutzfeld-Jacob disease. Cerebral blood flow was heterogeneously decreased throughout the brain, differing from the pattern observed in other common types of dementia. These results suggest that HMPAO-SPECT may provide useful information in the differential diagnosis of dementia, specifically when Creutzfeld-Jacob disease is suspected.     

Selective ergonovine-induced coronary artery spasm and ST-segment alternans after blunt thoracic trauma

A 24-year-old man was found to have angiographically normal coronary arteries shortly after suffering blunt thoracic trauma. Selective ergonovine administration into the left coronary artery induced total occlusion of the left anterior descending branch and electrical alternans of the ST-segment. This case demonstrates coronary artery spasm as a possible mechanism of coronary occlusion after blunt thoracic trauma.     

Histochemical light microscopic study of catecholamine containing paraganglia in the human pelvis

Histological and histochemical techniques have been employed to determine the structure and autonomic innervation of paraganglia located in the human pelvis. In foetal and early postnatal tissues, paraganglia formed rounded cellular masses which were frequently in company with the autonomic nerves and ganglia of the urinary bladder and other pelvic viscera. The constituent cells contained only small amounts of cholinesterase and were unrelated to enzyme positive autonomic nerves; acetylcholinesterase containing nerves were occasionally observed in the capsule and the fibrous septa of the pelvic paraganglia. In early postnatal specimens, pelvic paraganglia frequently contained single or multiple "pacinian-like" corpuscles, each possessing a central region which was rich in both acetyl and pseudocholinesterase. These structures were rarely observed within autonomic ganglia and were absent 4 1/2 years post partum. By means of a histochemical technique, pelvic paraganglia were found to contain catecholamine which was attributed to the presence of relatively large quantities of noradrenaline. These observations have been discussed with particular reference to the results of other studies on the autonomic innervation of paraganglia.     

Perspective from the United States: Tensions between “Getting It Done” and “Getting It Right”

For over 2 decades, and in response to complaints that arbitration was too expensive and too time consuming, the American construction bar has been energetic and innovative in developing a broad array of dispute resolution tools for resolving construction disputes. These “tools” have included “partnering,” mandatory negotiations, interim decision making by design professionals, mediation, standing neutrals and dispute resolution boards, minitrials, early neutral evaluation, and expert determinations, all developed as alternatives to arbitration and litigation. More recently, in 2006, a voluntary “fast track” process for resolving construction disputes within 100?days has been proffered by the CPR Institute for Conflict Prevention and Resolution. Yet, there are certain dynamics or “tensions” inherent within, and associated with, all construction disputes that continue to resist efforts to speed up dispute resolution processes; these tensions must be reconciled or taken into account before any fast track or “adjudication”-type process will be generally accepted in the United States construction industry. Thus, for now and in the foreseeable future, there will continue to be a smorgasbord of dispute resolution processes for resolution of construction disputes. This is a good thing, because parties to construction disputes come with a great variety of appetites and needs. The focus of attention should be, not so much on development of the ideal or best dispute resolution tool, but having a willingness to select the “best tool for the job,” after the nature of the dispute is known.     

短消息平台的原理与设计

结合作者的实际工作经验，介绍了移动短消息的收发原理和短消息平台的体系结构、设计方法，并以本文作者负责组建的青岛短消息平台为例，介绍了其中的系统分析、系统设计、体系结构和功能构成等关键技术问题．