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Loosdrecht, M.C.M. (author), Jetten, M.S.M. (author)Treatment of ammonia-comprising waste water comprises: (a) subjecting the waste water to a nitrification treatment using a nitrifying microorganism and adding oxygen, to give a solution comprising an oxidation product of ammonia, and (b) converting the oxidation product of ammonia into nitrogen using a denitrifying microorganism, use of...patent 1998
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Hemmes, K. (author), Dijkema, G.P.J. (author)A method of operating a molten carbonate fuel cell having an anode and a cathode and in between a matrix comprising molten carbonate. Carbon dioxide is introduced into the matrix at a distance from the cathode. This greatly reduces the cathode's deterioration and in the system design increases the control potential of the fuel cell. A fuel cell...patent 1998
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Van Poppel, E.J.M. (author), Rem, P.C. (author)The invention relates to a method of the continuous dehydration of sludge wherein, prior to dehydration, water is mechanically removed from the sludge and the thus obtained sludge of cutting consistency is mixed with heated spheres. According to the invention dehydration is carried out at reduced pressure, wherein the sludge from which water has...patent 1998
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Herder, J.L. (author), Horward, M.J. (author)The invention relates to manipulating pliers especially but not exclusively for surgical purposes, comprising a frame, at a first side of the frame a control handle and at a second side opposite the first side of the frame a gripper as well as a coupling between the control handle and the gripper. The control handle and the gripper are each...patent 1998
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Maase, S.J.F. (author)The instrument has a stem (1) with a working portion at its distal end and an operating handle (6) at its proximal end, together with an actuating component (5). The handle forms an oblong grip which is slightly convexly curved to fit in the palm of the hand. The actuating component is situated at the handle end where this is joined to the stem....patent 1998
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Willemse, A.W. (author), Merkus, H.G. (author)Described is a method for measuring the particle size of ultra-small particles (202) which are suspended in a fluid. Laser light (121, 123) is guided via a first optical path (160) to a suspension (201), and light (125) scattered by the particles (202) in the suspension (201) is guided to an optical detector (140) via a second optical path (170)...patent 1998
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Snijder, J. (author)The drill head consists of a pointed end with cutting edges (5) on the ends of the flutes (3). The endface of the drill head, opposite the pointed end, incorporates a central blind hole (6). A separate drill shaft (2) has a cylindrical protrusion at its end which fits into the hole in the drill head to which it is attached by hard soldering. The...patent 1998
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Beukers, A. (author), De Winter, S.E.E. (author), De Haan, P.A.J. (author)In order, in a loading container (1) for conveying goods, to reserve a larger or smaller part as desired for the transportation of bulk material and/or fluids, it is proposed to convey this bulk material (10) or these fluids in flexible receptacles (11) which, during filling, adopt an essentially parallelepipedal form which corresponds to the...patent 1998
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Van Seters, S.M. (author), Gerstel, A.W. (author)The invention relates to a silo comprising a vertical wall (1), a roof (2), a central column (4) and a freely rotatable intermediate bin (3) between the roof and the central column, the intermediate bin being equipped with a feeder screw (5), and also a telescopic chute (ef) which is positioned on the discharge side of the feeder screw and a...patent 1998
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Heijnen, J.J. (author), Van Loosdrecht, M.C.M. (author)The invention relates to a method of acquiring granular growth of a microorganism in a reactor containing a liquid medium. Surprisingly, according to the invention, aerobic microorganisms also can be induced to granular growth by maintaining specific culture conditions. During a first step an oxygen-containing gas is supplied and the reactor...patent 1998
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Diepen, P.J. (author), Vreeken, V.P.C. (author)The invention relates to an apparatus for measuring the permeability of crystal particles suspended in a slurry, comprising a filtering element (3) and driving means (4, 5, 6) for driving the slurry into the filtering element. The filtering element is connected with discharge means (8, 9) for the filtrate and a measuring instrument (10) for...patent 1998
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Verhoeven, C.J. (author)Resonator provided with a resonating device and with a selection circuit for selecting a resonance mode. The selection circuit is formed by a first-order oscillator which is provided with a synchronization input and whose output is connected to the excitation input of the resonating device, the output of the resonating device being connected to...patent 1998
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Hemmes, K. (author), Koops, K.R. (author)Ellipsometer having light source means which provide a first light beam (g1) having a first angular frequency ( omega 1) and a second light beam (g2) having a second angular frequency ( omega 2), a neutral beam splitter (N) having a front face for receiving a measuring beam (g'm2), which during operation is produced by scanning a sample (S;OD1...patent 1998
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Kruit, P. (author)Lithography system comprising a light source producing a light beam directed to a mask (3) located in a mask level and an optical demagnifier (4-6) for demagnifying by a factor and focusing the beam. The light beam is focused on a converter element (8) for converting said beam in a further beam having a smaller wavelength than UV light. The beam...patent 1998
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Moretti, M. (author), Janssen, G.J.M. (author)Abstract of NL 1007132 (C1) The null points of the filter transfer function (h(t)) are identical to the null points of the base frequency of the modulation signalpatent 1999
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Coenen, A.J.R. (author)Method and device for filtering a digital signal with the aid of an Mth order finite impulse response filtering with a fractional delay d which is a fraction of the sampling period associated with the digital signal, in order to obtain an interpolated value. This involves predetermining (M+1)/2 window weights wk of a window function which is...patent 1999
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Advani, S.K. (author)The invention relates to a motion simulator comprising a deck supported by a number of length-adjustable legs that are connected to the deck in first pivot points, which legs are connected to a base part in second pivot points, wherein the first and second pivot points respectively form pairs, wherein: the first and/or second pivot points are...patent 1999
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Hansen, I.A. (author)The linear motor consists of a series of stator coils (2) located along the Track guided self-driven container wagon Track guided self-driven container wagon track and a reaction rail (3) fitted under the wagon chassis (4).patent 1999
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Nijsse, G.J.P. (author), Spronck, J.W. (author)There is described a support system enabling supporting an object such as a platform (1) free from vibration, in that bearing elements (50) have a stiffness (k) which at a working point (z0) equals zero. A bearing element (50) comprises two magnetic couplings (51, 52) provided by permanent magnets (61, 63). One coupling (51) has a positive...patent 1999
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Boone, M.M. (author), Berkhout, A.J. (author), Merks, I.L.D.M. (author)Hearing aid for improving the hearing ability of the hard of hearing, comprising an array of microphones, the electrical output signals of which are fed to at least one transmission path belonging to an ear. Means are provided for deriving two array output signals from the output signals of the microphones, the array having two main sensitivity...patent 1999