Drop Finger

Fig. 11.26a-c. Extensor tendon tear in patient with drop finger after a blow. a,b Longitudinal 12-5 MHz US images over the dorsal aspect of the distal interphalangeal joint obtained during passive a extension and b flexion movements of the distal phalanx. US demonstrates a thickened and hypoechoic extensor tendon (arrowheads). Observe the retracted tendon end (arrow), which remains immobile over the middle phalanx (MP) during movements of the distal phalanx (DP), c Contralateral healthy side. A normal extensor tendon (arrowheads) is seen inserting on the base of the distal phalanx... 

A drop of surfactant solution will, under certain conditions, undergo a fingering instability as it spreads on a surface [27, 28]. This instability is attributed to the Marongoni effect (Section IV-2D) where the process is driven by surface tension gradients. Pesach and Marmur have shown that Marongoni flow is also responsible for enhanced spreading... 

Vapours which can be readily condensed e.g., chloroform, aniline, nitro-benzene, etc.) are readily detected by the device shown in Fig. 5 i(b). It is essentially a cold finger with a deep indentation or weU at the lower end. In this way two or three drops of liquid can easily be collected and removed by a capillary tube for qualitative tests. 

Apparatus 3-1 round-bottomed, three-necked flask, provided with a dropping funnel, a mechanical stirrer and a reflux condenser, cooled with dry-ice and acetone (cold finger). The upper end of this condenser was connected with a drying tube filled with anhydrous calcium chloride. 

The following procedure is given in U.S. Patent 3,458,528 78 grams (0.675 mol) of 5-nitroimidazole is dissolved in 1,500 ml of acetic acid upon the addition of 72 ml (0.57 mol) of boron trifluoride etherate. 175 ml (3.5 mols) of ethylene oxide in 175 ml of hexane, in a dropping funnel topped with a cold finger, is added slowly over 1 hour to the above solution maintained at 32° to 35°C with a water cooling bath. The mixture is concentrated under high vacuum to 100 to 150 ml volume. The residue is diluted with 500 ml of water, neutralized to pH 7 with aqueous sodium hydroxide, and extracted with 1.5 liters of ethyl acetate. The extract is dried and evaporated to yield 1-(2 -hydroxyethyl)-5-nitroimidazole. 

Races finger on inner canthusto avoid absorption via the tear dud (when instilling drops and only if ordered). 

Use of nasolacrimal occlusion decreases systemic absorption up to 60% and may increase ocular bioavailability of the drug. After instillation of the eye drop, the patient should close the eye and press a finger gently against the nasolacrimal duct (tear duct) for 2 to 3 minutes. 

The morning light is sharp. I blink and drop my rosary. The flesh feels naked where Louis s ring has lodged on my finger these last weeks. The priest picks my rosary up and pushes it back into my hand, and I touch Saint Augustine and Saint Bridget and our... 

Patients should be taught how to administer topical therapy. With a forefinger pulling down the lower eyelid to form a pocket, the patient should place the dropper over the eye, look at the tip of the bottle, and then look up and place a single drop in the eye. To maximize topical activity and minimize systemic absorption, the patient should close the lid for 1 to 3 minutes after instillation and place the index finger over the nasolacrimal drainage system in the inner corner of the eye. 

Wentrup and co-workers investigated the flash vacuum pyrolysis of isopropylidene (l-methyIpyrrolidin-2-ylidene)malonate (1261) (86CC369) (Scheme 51). When the pyrolysis was carried out at 450°C (10-4 torr, contact time 10 3 sec), and the product was condensed on a cold finger at -196°C, (pyrrolidinylidene)malonic anhydride (1262) could be identified. Malonic anhydride (1262) in chloroform solution at -20°C lost carbon dioxide to give methyleneketene (1263), which was reacted with a few drops of water or methanol to yield acrylates (1264). Flash vacuum pyrolysis of 1261 at higher temperature (800°C) gave pyrrolopyrrolone (1265). The products were characterized by IR and 13C-NMR data. 

Alternatively, mediator-based sensors have been marketed as Glucose Pens - The Medisense Pen - in which the pen s nib is in fact attached to the external part of the sensor. With this sensor, the finger of a patient is pricked and a drop of blood is then placed on the sensor tip. These electroanalytical... 

When dispensing eye drops, patients are advised to tilt back their head, pull down the lower eyelid with the index finger and instil the drops without touching the eyelid with tip of the dropper. Patients are then advised to keep their eyes closed for 2-3 minutes. Any excess liquid drops can be wiped away from the face. The eye dropper is replaced and capped. Patients applying more than one type of eye drops are advised to allow an interval of 5 minutes between one medication and another. 

Accidental installation in a human eye of one drop of a 50% zinc chloride solution caused immediate and severe pain, which persisted despite immediate irrigation with water. The corneal epithelium was burned, and corneal vascularization followed. After many weeks, areas of opacification and vascularization remained in the cornea. Zinc chloride has caused ulceration of the fingers, hands, and forearms of workers who used it as flux in soldering. ... 

Debiasing of emitter-base pn junction can be minimized by using a double metal process. A simplified cross section of a 4H-SiC power BJT with double metal process is shown in Figure 6.11. In this structure, the emitter electrode covers most of the active area and is connected to emitter fingers through vias, whereas the base electrode is placed outside of the active area. Use of this structure eliminates most of the resistive voltage drop in the emitter fingers at an increased cost of the fabrication process. 

For postmortem analysis, blood and bile are collected at the latest at the time of autopsy. Otherwise, as is true for plasma samples, the most informative results are obtained when blood samples are collected during acute illness or at least prior to a meal (see 3.2.4, subheading Specimen ). Blood should be obtained by capillary stick of well-perfused skin (heels in young infants or fingers) and free dripping of a few drops of blood directly on the filter paper card. Following complete drying at room temperature for at least 3 h, the sample can be sent ambient. Analysis should be... 

Next let us consider those difficulties associated with the determination of the amount of material deposited on the surface. We have already noted that the method of depositing insoluble monolayers by spreading permits the accurate determination of n. Since the spreading technique requires solvent volatility, care must be exercised to prevent the stock solutions from changing concentration due to evaporation prior to their application to the surface. Also, precise microvolumetric methods must be used to dispense the solution on the aqueous surface since the quantity used is small. The solvent (as well as the solute) must be free from contaminants. There is also the possibility that the solvent will extract spreadable contaminants from the waxed surfaces of the float, barriers, and tray. Some workers advocate addition and evaporation of one drop at a time to minimize this. Oily contaminants may also reach the water surface from the fingers and from the atmosphere. These last sources are particularly hard to control Tests for reproducibility and blank compressions (i.e., moving the barrier toward the float on a clean surface) are the best evidence of their absence. 

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