establishment of the gas exporting countries forum in tehran in 2001 has proved to be one of the most important changes in the gas market. gecf has a considerable share in the world liquefied natural gas (lng) trade. facts show that current routes of lng trade are not optimal. hence, in this paper we examine the development of cooperative strategies between countries exporting (lng) and members...

Levonorgestrel (LNg) is known for its marked progestational/contraceptive activity. As shown in animal experiments, however, high doses of LNg are required to elicit an androgenic response; in contrast, considerably lower doses of LNg are required for antiovulatory (contraceptive) action. Thus, a large dose separation exists between androgenic and contraceptive activity. When LNg is combined wi...

BACKGROUND Levonorgestrel (LNG) consistently prevents follicular rupture only when it is given before the onset of the ovulatory stimulus. As locally synthesized prostaglandin (PG) plays a crucial role in follicular rupture and cyclooxygenase-2 (cox-2) catalyses the final step of PG synthesis, we reasoned that adding a cox-2 inhibitor to LNG would prevent follicular rupture even after the ovula...

Energy plays a fundamental role in both manufacturing and services, and natural gas is rapidly becoming a key energy source worldwide. Facilitating this emergence is an expanding network of ocean-going vessels that enable the matching of natural gas supply and demand on a global scale. This is achieved through the transportation of liquefied natural gas (LNG) for eventual regasification at its ...

OBJECTIVE To study the association between knowledge about levonorgestrel emergency contraception (LNG-EC) and the risk of ectopic pregnancy (EP) following LNG-EC failure. METHODS This study included 600 women who had visited the hospital with LNG-EC failure. Of these, 300 with EP and 300 with intrauterine pregnancy (IUP) were recruited to the EP group and IUP group respectively. The particip...

BACKGROUND An enteric-coated levonorgestrel emergency contraceptive pill (E-LNG-ECP) is an improved formulation, in terms of side effects, which both dissolves and is absorbed in the intestine. Our aim was to evaluate the efficacy and safety of E-LNG-ECP as an over-the-counter (OTC) drug for emergency contraception (EC) in Chinese women. METHODS A Phase IV clinical trial was conducted in five...

Journal of Family Planning and Reproductive Health Care 2004: 30(2) What is the levonorgestrel-releasing intrauterine system? This Guidance provides recommendations and good practice points regarding the use of a levonorgestrelreleasing intrauterine system, the accepted abbreviation for which is LNG-IUS. The use of a copper-bearing intrauterine device (IUD) has been covered in previous Faculty ...

Journal of Family Planning and Reproductive Health Care 2004: 30(2) What is the levonorgestrel-releasing intrauterine system? This Guidance provides recommendations and good practice points regarding the use of a levonorgestrelreleasing intrauterine system, the accepted abbreviation for which is LNG-IUS. The use of a copper-bearing intrauterine device (IUD) has been covered in previous Faculty ...

BACKGROUND Experimental evidence to disprove the belief that emergency contraception with levonorgestrel (LNG) prevents pregnancy by interfering with post-fertilization events is lacking. Here we determined the effect of post-coital and pre-ovulatory administration of LNG on fertility and ovulation, respectively, in the Cebus monkey. METHODS To determine the effect on fertility, LNG 0.75 mg o...