مکان‌یابی با درنظرگرفتن موضوع رقابت در بازار، یک تصمیم راهبردی و بلندمدت محسوب می­‌شود. چنانچه انتخاب مکان، بررسی‌­های لازم صورت نگیرد، حیات سازمان تحت تأثیر قرار می‌­گیرد. به‌­دلیل وجود پیچیدگی‌­های موجود مسائل مکان‌یابی، ارائه مدل‌های محدودیت­‌های متنوعی مواجه است. هدف این پژوهش، توسعه مدل رقابتی درنظر­گرفتن دو محصول از سوی سه رقیب است؛ برای منظور، مسئله به‌­صورت بازی مکان ـ قیمت تعریف استفاد...

BACKGROUND Levonorgestrel-releasing intrauterine devices (LNG-IUD) are commonly used for contraception and other indications in many countries. National pharmacovigilance centres have been receiving reports from healthcare professionals and patients of uterine perforation associated with the use of these LNG-IUDs. METHODS National pharmacovigilance centres in the Netherlands, New Zealand, Swi...

The Asia-Pacific region, the largest and fastest growing liquefied natural gas (LNG) market in the world, has been undergoing radical changes over the past few years. These changes include considerable additional supplies from North America and Australia, and a recent LNG price slump resulting from an oil-linked pricing mechanism and demand uncertainties. This paper develops an Asia-Pacific Gas...

OBJECTIVES Compare the Plan B levonorgestrel (LNG) area under the concentration- time curve (AUC(12)) prior to and with efavirenz (EFV). Design. Prospective, open-label, single-arm, equivalence study. METHODS Healthy HIV-negative subjects underwent 12 hr intensive pharmacokinetic (PK) sampling following single dose LNG alone and after 14 days of EFV. Geometric means, Geometric Mean Ratios, an...

Mirena is a long acting intrauterine hormone-releasing (LNG-IUS) contraceptive system with a flexible plastic T-shaped frame bearing a levonorgestrel(LNG)containing cylinder which releases small doses levonorgestrel into the uterine cavity after insertion with maximum effect on the endometrium and minimum progestogenic side-effect. LNG causes thinning of the endometrium, atrophy of the endometr...

OBJECTIVE The aim of the present study was to identify variables associated with treatment failure in women with menorrhagia who were treated with thermal balloon ablation (TBA) or levonorgestrel releasing intrauterine system (LNG-IUS), and to determine if there are subgroups where one treatment type is more effective than the other. METHODS The study included 106 women with menorrhagia who w...

OBJECTIVES To compare the effects of two monophasic combined oral contraceptives, containing either nomegestrol acetate/17β-oestradiol (NOMAC/E2) or levonorgestrel/ ethinylestradiol (LNG/EE) on endocrine function, androgens, and sex hormone-binding globulin (SHBG). METHODS Randomised, open-label, multi-centre trial involving 121 healthy women, aged 18-50 years old. Participants received NOMAC...

OBJECTIVE This study was designed to evaluate the potential usefulness of the levonorgestrel-releasing intrauterine device (LNG - IUD ; Mirena) in treating women with uterine myomas. DESIGN Prospective before-and-after (comparing) study. SETTING Department of Obstetrics and Gynecology King Chulalongkorn Memorial Hospital. SUBJECTS Sixteen women with uterine myomas who intended to receive ...

BACKGROUND Menstrual bleeding disturbances are a common initial complaint among users of the levonorgestrel-releasing intrauterine system (LNG-IUS). In this study, women who experienced bleeding disturbances recurring after a previous period of problem-free use and who therefore wanted removal of their LNG-IUD were investigated. Vascular endothelial growth factors (VEGFs) and their receptors ar...