Abstract: A common method of preparing a gas diffusion layer for a fuel cell has problems in that a microporous layer is impregnated into a substrate, thereby lowering the porosity of the substrate, and cracks are created on a surface of a gas diffusion layer prepared using the method. Provided is a method of reproducibly preparing a gas diffusion layer with a uniform thickness and no cracks based on the principle of a primer coating method, wherein a first microporous layer is hardly impregnated into a substrate and uniformly covers a surface of the substrate, and at least one microporous layer is further coated on the first microporous layer. Provided is also a fuel cell showing improved performance by enhancing utilization of a catalyst layer and guaranteeing a uniform diffusion of fuel and an efficient discharge of a product.

Abstract: 0A method for treating or preventing an elevated blood lipid level-related disease in a mammal, which comprises administering thereto an effective amount of rutin, quercetin or a mixture thereof.

Abstract: A method for treating or preventing an elevated blood lipid level-related disease in a mammal, which comprises administering thereto an effective amount of rutin, quercetin or a mixture thereof.

Abstract: A method for treating or preventing an elevated blood lipid level-related disease such as hyperlipidemia, arteriosclerosis, angina pectoris, stroke and hepatic diseases in a mammal, which comprises administering thereto an effective amount of a cinnamic acid derivative of formula Ia or Ib, or a pharmaceutically acceptable salt thereof: wherein, R1, R2, R3, R4 and R5 are independently H, OH or C1-4 alkoxy; and R6 is H, C1-4 alkyl group, or C5-7 cycloalkyl group having one or more substituents selected from the group consisting of OH, alkoxy and carboxy groups.

Abstract: Methods for inhibiting the activity of acyl CoA-cholesterol-o-acyltransferase, inhibiting the accumulation of macrophage-lipid complex on the arterial endothelium, and preventing or treating hepatic diseases in a mammal comprise administering a citrus peel extract thereto.

Abstract: A method for treating or preventing an elevated blood lipid level-related disease in a mammal, which comprises administering thereto an effective amount of rutin, quercetin or a mixture thereof.

Abstract: Method for inhibiting the formation of fatty streak on the arterial endothelium in a mammal comprise administering a citrus peel extract or citrus peel powder thereto.

Abstract: Methods for inhibiting the activity of acyl CoA-cholesterol-o-acyltransferase, inhibiting the accumulation of macrophage-lipid complex on the arterial endothelium, and preventing or treating hepatic diseases in a mammal comprise administering naringin or naringenin thereto.

Abstract: A method for treating or preventing an elevated blood lipid level-related diseases such as hyperlipidemia, arteriosclerosis, angina pectoris, stroke and hepatic diseases in a mammal, which comprises administering thereto an effective amount of tannin, gallic acid or ellagic acid.

Abstract: A method for increasing the plasma high density lipoprotein(HDL) level in a mammal comprises administering a bioflavonoid of formula(I) or plant extract containing same thereto: ##STR1## wherein, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5.sub.7 R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are each independently hydrogen; a hydroxy group; a C.sub.1-9 alkoxy group optionally substituted with one or more substituents selected from the group consisting of a hydroxy, C.sub.1-5 alkoxy, aryloxy, and phenyl group substituted with 1 to 3 substituents selected from the group consisting of a hydroxy, alkoxy, aryloxy, halogen, nitro and amido group; a C.sub.5-9 cycloalkyloxy group substituted with 1 to 3 substituents selected from the group consisting of a hydroxy, alkoxy, aryloxy, halogen, nitro and amido group; a C.sub.5-9 cycloalkylcarbonyloxy group substituted with 1 to 3 substituents selected from the group consisting of a hydroxy, alkoxy, aryloxy, halogen, nitro and amido group; a C.sub.2-10 or C.sub.

Abstract: A method for lowering the blood glucose level in a mammal comprises administering an effective amount of a hesperetin or naringenin bioflavonoid.

Abstract: A method for inhibiting the activity of 3-hydroxy-3-methylglutaryl CoA(HMG--CoA) reductase in mammals is disclosed comprising administering naringin or naringenin thereto.

Abstract: A method for inhibiting the activity of 3-hydroxy-3-methylglutaryl CoA(HMG-CoA) reductase in mammals comprises administering citrus peel extract thereto.

Abstract: A method for inhibiting the activity of 3-hydroxy-3-methylglutaryl CoA(HMG-CoA) reductase in mammals comprises administering hesperidin or hesperetin thereto.