There is provided a polarized plastic lens for spectacles configured to be thin having almost the same thickness as the thickness of a normal plastic lens for spectacles, and a method for manufacturing the polarized plastic lens for spectacles, the plastic lens including a first lens base material having an object-side surface; a second lens base material having an eyeball-side surface; and a polarized film provided between the first lens base material and the second lens base material so that a minimum value of a distance between the polarized film and the object-side surface is 0.3 mm or more and 0.7 mm or less.

There is provided a polarized plastic lens for spectacles configured to be thin having almost the same thickness as the thickness of a normal plastic lens for spectacles, and a method for manufacturing the polarized plastic lens for spectacles, the plastic lens including a first lens base material having an object-side surface; a second lens base material having an eyeball-side surface; and a polarized film provided between the first lens base material and the second lens base material so that a minimum value of a distance between the polarized film and the object-side surface is 0.3 mm or more and 0.7 mm or less.

A specially-equipped ship is configured for environmental cleanup to collect plastic waste floating in the ocean. A method of using the ship is described. The specially-equipped ship can retrieve floating plastic waste in the ocean, shred it, melt it, and cool it to form a solidified block that is usefully employed to form an artificial reef on the ocean floor to house aquatic biota. The ship is outfitted with a conveyor belt fixed to the ship; a furnace to make molten plastic; a davit to drop the solidified block into the ocean to form a reef on the ocean floor. Optionally the ship includes a mold to contain molten plastic; a shredder; a storage compartment to receive plastic particles from the shredder; a fish escape; a vertical wall; a boring machine; photovoltaic cells and/or windmills to produce electric energy.

Systems and methods for creating microneedle arrays capable of delivering a suitable drug dosages to subjects are provided. In one aspect, a method comprises creating at least one forming mold using laser ablation in a cross-over line pattern. The method further comprises casting a first material onto the at least one forming mold to create at least one microneedle mold. The method further comprises casting a second material onto the at least one microneedle mold to create at least one hollow microneedle.

The invention relates to a device for producing a spacer having a stem mold (1) which has an inner space (2), wherein the inner space (2) is accessible via a proximal opening (3) and wherein the stem mold (1) has a proximal wall (4) which peripherally delimits the proximal opening (3) of the stem mold (1), a head mold (5) which has in the interior thereof a hollow space (6), wherein the hollow space (6) has a spherical surface-shaped inner surface (7) and is accessible via a distal opening (8), wherein the head mold (5) has a distal wall (9) which peripherally delimits the distal opening (8) of the head mold (5), a metal core (10) which has a stem part (12), a head part (14) and a flange (16), wherein the flange (16) projects out from the metal core (10), is arranged between the stem part (12) and the head part (14) and has a proximal surface (18) and a distal surface (20), wherein the stem mold (1) and the stem part (12) are shaped such that the stem part (12) is arranged in the inner space (2), when the proximal wall (4) is resting against the distal surface (20), and wherein the head mold (5) and the head part (14) are shaped such that the head part (14) is arranged in the hollow space (6), when the distal wall (9) is resting against the proximal surface (18).

The invention also relates to a set with such a device and to a method for producing spacers with such a device.

Methods for mass production of new microfluidic devices are described. The microfluidic devices may include an array of micro-needles with open channels in fluid communication with multiple reservoirs located within a substrate that supports the micro-needles. The micro-needles are configured so as to sufficiently penetrate the skin in order to collect or sample bodily fluids and transfer the fluids to the reservoirs. The micro-needles may also deliver medicaments into or below the skin.

Methods for mass production of new microfluidic devices are described. The microfluidic devices may include an array of micro-needles with open channels in fluid communication with multiple reservoirs located within a substrate that supports the micro-needles. The micro-needles are configured so as to sufficiently penetrate the skin in order to collect or sample bodily fluids and transfer the fluids to the reservoirs. The micro-needles may also deliver medicaments into or below the skin.

Systems and methods for protecting a user from external contamination with a mask. Exemplary embodiments may include a mask including an open threaded portion couplable to a filter; one or more extrusions on a front of the unibody mask to mount straps to the unibody mask; wherein the mask is made of silicone, and wherein the unibody mask presses against a face such that the unibody mask seals an interior of the unibody mask from an exterior of the unibody mask.

Systems and methods for protecting a user from external contamination with a mask. Exemplary embodiments may include a mask including an open threaded portion couplable to a filter; one or more extrusions on a front of the unibody mask to mount straps to the unibody mask; wherein the mask is made of silicone, and wherein the unibody mask presses against a face such that the unibody mask seals an interior of the unibody mask from an exterior of the unibody mask.

A method for manufacturing a molded product with fine structure includes steps of, in a temperature-controlled stamper mold provided with a fine structure including a concavo-convex pattern having a width of 10 nm to 1 μm, forming a thermoplastic molten polymer layer to be in contact with the fine structure 20 of the stamper mold having been kept at a predetermined temperature and holding the thermoplastic molten polymer layer for a predetermined time so as to transfer the fine structure of the stamper mold to the thermoplastic molten polymer layer under gravity.