Combing Room

Combing allows the production of very fine, high-quality spun yarns. 

In the combing preparation, several card slivers are drawn and wound up parallel as comber rolls on a sliver lap machine (Fig. 3.10). There are two different principles of combing preparation. The card slivers can either be drafted first and then wound up as combing rolls (sliver doubling principle), or they can be wound up first and then drafted together on a ribbon lap machine (ribbon lap principle). In modern combing preparation, the sliver doubling principle is preferred. 

With the combing itself, the fiber web rolled off the lap is pinched between tongs and mechanically combed out with combs. The removed short fibers and dirt particles are called noil or comber waste. The combed cotton is deposited as sliver into cans. The last stage in the combing room is an autoleveller draw frame that homogenizes the combed slivers. 

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The anionic polymerization of methacrylates using a silyl ketene acetal initiator has been termed group-transfer polymerization (GTP). First reported by Du Pont researchers in 1983 (100), group-transfer polymerization allows the control of methacrylate molecular stmcture typical of living polymers, but can be conveniendy mn at room temperature and above. The use of GTP to prepare block polymers, comb-graft polymers, loop polymers, star polymers, and functional polymers has been reported (100,101). 

The relationships between air exchange rate and temperature difference were determined using COMB (Fig. 11.51) and then integrated as the ventilation model in the thermal model. The rhermai behavior is modeled with the TRNSYS multizone type, considering the hall and the room below the thick concrete test floor slab. For the hall, a room model with two air temperature nodes (one for the occupied zone and one for the rest of the hall) and geometrically detailed radiation exchange is used. 

Synthesis of comb (regular graft) copolymers having a PDMS backbone and polyethylene oxide) teeth was reported 344). These copolymers were obtained by the reaction of poly(hydrogen,methyl)siloxane and monohydroxy-terminated polyethylene oxide) in benzene or toluene solution using triethylamine as catalyst. All the polymers obtained were reported to be liquids at room temperature. The copolymers were then thermally crosslinked at 150 °C. Conductivities of the lithium salts of the copolymers and the networks were determined. 

Mix the gel gently according to Table 2.5 and introduce it into the cassette without delay. Insert the comb into the liquid polyacrylamide mixture. Polymerization proceeds at room temperature. 

The ligand is dissolved in Soln. B with a concentration of 0.2-1 mg/ml (for a 10 x 10-cm plate 5 ml are needed). Heat this solution to 60 °C and mix with an equal volume of agarose solution A, also heated to 60 °C. Pour the mixture onto a horizontally straightened glass plate. Introduce the comb and allow the gel to solidify at room temperature. 

Case Example A 44-year-old chronic alcoholic man presented in the emergency room with disorientation and combativeness after 2 days of abstinence. He complained of visual and tactile hallucinations and was found to have elevated heart rate, blood pressure, and temperature. Lorazepam was slowly administered intravenously, and after 15 minutes, the patient was mildly sedated. He was then transferred to an inpatient unit. During this 30-minute interval, he received no additional lorazepam, and when he arrived on the floor, his symptoms had returned. He became agitated, struck one of the nursing staff, and had to be physically restrained. 

At room temperature these polymer-Co(II)porphyrin complex, except CoMb, were irreversibly oxidized to the Co(HI) complexes. Oxidation of the Fe(II)-por-phyrin complexes proceeds more rapidly than that of the Co(II)porphyrin complexes. The next section deals with attempts to make polymer ligands act as inhibitors to the irreversible oxidation of metalloporphyrin complexes. 

Pour the agarose into the gel tray, remove air bubbles if present, insert the comb and allow the gel to set at room temperature. 

To obtain improved ionic mobility, and thus high conductivity, alternative polymer structures have been developed, for example comb-branched block copolymers such as poly[bis(methoxy ethoxy ethoxide)], usually known as MEEP. Room temperature conductivities of MEEP-based polymer electrolytes of the order of 10-5 S/cm have been achieved, values... 

General-purpose polystyrene is extruded either clear or embossed for room dividers, shower doors, glazings, and lighting applications. Injection molding of impact polystyrene is used for household items, such as flower pots, personal care products, and toys. General-purpose polystyrene is used for cutlery, bottles, combs, disposable tumblers, dishes, and trays... 

Procedure. Follow the proportions in Table II. Mix and pour into a sealed gel former immediately. Leave room for a short upper stacking gel. With a fine pipette, layer a small amount of 0.1% SDS solution on top of the unpolymerized gel to give a flat surface and to remove bubbles. As the gel polymerizes the water interface will become indistinct and then will reappear as the gel sets. Pour off the water and add the upper gel. Immediately insert the comb for well formation. Upper stacking gels usually shrink slightly as they polymerize. Mount the gel in a vertical apparatus. Make sure the running buffer contacts both upper and lower surfaces of the gel. 

Allow the flask to cool at room temperature (swirling occasionally) for 5 min. Pour the solution into a gel cast fitted with a 10-well comb at one end. Allow the agarose to set ( 40 min). 

I left my hair-brush and comb in my bed-room at your house. Will you be so good as to do them up in a parcel, put the inclosed label on, and post them to me. 

K. Combing of hair will not be allowed in the clean room or gowning area. 

Pour the acrylamide gel mix between the plates and insert the appropriate comb. Allow to polymerize at room temperature for at least 45 min. 

Remove the comb and the tape when the gel has completely hardened (20-40 min at room temperature). Place the gel in the electrophoresis tank and add enough TBE buffer to the tank to cover the gel (about 1 mm of depth). The top of the wells should be submerged in TBE buffer. 

Casa Islena, in fact, was originally a home. Today the nine-room oceanfront hotel offers comfort within Spanish architecture. Casually elegant, the rooms have all the modern conveniences such as air conditioning and cable TV. In addition to combing the beach for seaglass and shells, you... 

Very recently, the self-assembly of poly(y-benzyl-i,-glulamalc)-fo-poly(i,-lysine) rod-coil copolypeptide via ionic complexation was reported by Ikkala, Hadjichristidis and coworkers [65]. Complexation between the anionic surfactants dodecyl benzenesulfonic acid and the cationic poly(L-lysine) chains occurs via proton transfer from the acid group to the base, resulting in electrostatically bonded comb-like structures, and fluid-like liquid crystalline structures at room temperature due to efficient plasticization of dodecyl benzenesulfonic acid. 

After an hour, set the plate in the gel-apparatus, gently take the comb out and flush the wells with water using a needle and syringe. Place the gel apparatus and power supply in the cold room. 

Plastics can be classified according to the physical properties imparted to them by the way in which their individual chains are arranged. Thermoplastic polymers have both ordered crystalline regions and amorphous noncrystalline regions. Thermoplastic polymers are hard at room temperature, but soft enough to be molded when heated, because the individual chains can slip past one another at elevated temperatures. Thermoplastic polymers are the plastics we encounter most often in our daily lives—in combs, toys, switch plates, and telephone casings, for example. They are the plastics that are easily cracked. 

Suppose that we are going to measure the T of the system by measuring the magnetization recovery after saturation (say by a comb as described in III.D.2.). Then immediately after the comb (t=0), the spin temperature Tg is infinite throughout the sample. The lattice temperature T, however, is much colder, say, equal to room temperature, and for all practical purposes we can take it to be zero for this discussion. The paramagnetic impurity provides the thermal link between the hot spins and the cold lattice. 

To a stitred mixture of 14 [39] (493 mg, 1.0 mmol), NaCNBHj (383 mg, 6.0 mmol) and 3-A molecular rieves in MeCN ( mL) at room tmqieratore was added as ralution, kqpt at 0°C, of MejSiO (652 mg, 6.0 mmol) in MeCN (6 mL). The reacdcm mixture was stirred for 5 h at room tenqierature, filtered tiuough Celite, and poured into ice-cold saturated aqueous NaHCOj. The aqueous phase was repeatedly extracted witii CHjClj. The combing extracts were washed with saturated aqueous NaHCOj, dried (MgSO.,), filtered, and concentrated. The residue was subjected to silica gel column chromatognqrhy (toluene/etbyl acetate 2 1) to yield 15 (375 mg, 76%), [a] -1-19.3° (c 1.0, CHCTj). RegioisomH 16 (13%) was also obtained. 

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