PURPOSE:To obtain a cytotoxic substance-bound reactive polymer useful as a cytotoxic substance in the production of a target-directing carcinostatic agent, by reacting a specified polysuccinimide with a cytotoxic substance containing an amino or imino group. CONSTITUTION:A polymer of formula I (wherein Y is a water-soluble aliphatic primary amine, W is a lower alkylene, Z is H, a group which, toge...

A method for making a porous structure including forming a plurality of particles into a desired shape, the particles being in a size range from about 40 to about 400 microns and including from about 5 to about 100 percent by weight of microporous particles of a synthetic thermoplastic polymeric material and from about 0 to about 95 percent by weight of nonporous synthetic thermoplastic polymeric ...

PURPOSE:To form a winding material free of the deviation of thickness by a method in which a small width of a heat-meltable resin band is bonded to a sheet part, and the sheet part is wound up while rolling a thick deviation-correcting sheet into the sheet portion other than the hot-bonded portion of the small width of the resin band. CONSTITUTION:A sheet part 10 is fed by rolls 13 and 14 provided...

PURPOSE:To prevent the deviation of thickness of a winding material by a method in which a heat-meltable resin band of a small width is bonded to a sheet material, and the sheet material is wound up while rolling a thick deviation- correcting sheet into the sheet portion other than the bonded portion. CONSTITUTION:A sheet material 10 is fed by rolls 12-15 provided between drums 11 and 16, and adhe...

PURPOSE:To manufacture a core for molding easily with high accuracy by making a master mold wherein a wire of roughly the same diameter as that of a hole of a circular columnar body provided with the hole of a minute diameter is inserted and fixed into said hole and performing electrocasting. CONSTITUTION:First, a circular columnar body provided with a through-hole of a minute diameter provided at...

The invention is concerned with a filter having an intake nozzle 12 which is connectable with a discharged air nozzle 14 of a pneumatic or electric tool having an extractor fan system. A filter cloth 22 can be fixed in the filter casing in any of a plurality of arrangements to divide the cavity in the casing into an intake section communicating with the intake nozzle and a discharge section commun...

Bicycle provided with two drive levers which each carry a pedal at one end and which, by means of a pivot, are connected pivotally about a pivot axis transversely to the riding direction to the bicycle, synchronization coupling means operative between the two levers to force same to execute their pivoting movements synchronously and in opposite rotation sense, there being disposed between each lev...

PURPOSE:To obtain an optical fiber having the function of selecting propagation light correspondingly to irradiation of excited light by adding specified compounds. CONSTITUTION:15 Kinds of specified compounds are used including chlorine derivatives, fluorine derivatives, etc. of a porphyrin derivative besides porphyrin derivatives represented by the general formula [where each of R1-R14 is a mono...

Instrument which is intended to be held totally or partially in the mouth of the individual and the size of which is such as to impair the ability of the individual to swallow or to speak normally. In accordance with the invention the instrument is provided with gripping surfaces which are so arranged and positioned as to enable the instrument to be moved to a position in the mouth in which swallo...

Instrument which is intended to be held totally or partially in the mouth of the individual and the size of which is such as to impair the ability of the individual to swallow or to speak normally. In accordance with the invention the instrument is provided with gripping surfaces which are so arranged and positioned as to enable the instrument to be moved to a position in the mouth in which swallo...

A lead acid electric storage battery in which the positive and negative electrodes are separated by a fibrous absorbent separator material substantially all of the electrolyte being absorbed in the electrodes and the separator (14) material characterised in that the current conducting elements (46) (48) (49) of at least the positives electrodes are made of antimonial lead alloy.

PURPOSE:To simplify fabrication or maintenance, by bringing a gas holder into communication with a gas generation tank, constituted so that a solid outside casing, a heat insulating member and a flexible inside container are fabricable, through piping provided with a check valve and a pressure regulator. CONSTITUTION:Sewage in a sewage tank 24 is sent into a gas generation tank 28 through piping 2...