(n.) The most common and most useful metallic element, being of almost universal occurrence, usually in the form of an oxide (as hematite, magnetite, etc.), or a hydrous oxide (as limonite, turgite, etc.). It is reduced on an enormous scale in three principal forms; viz., cast iron, steel, and wrought iron. Iron usually appears dark brown, from oxidation or impurity, but when pure, or on a fresh surface, is a gray or white metal. It is easily oxidized (rusted) by moisture, and is attacked by many corrosive agents. Symbol Fe (Latin Ferrum). Atomic weight 55.9. Specific gravity, pure iron, 7.86; cast iron, 7.1. In magnetic properties, it is superior to all other substances.
(n.) An instrument or utensil made of iron; -- chiefly in composition; as, a flatiron, a smoothing iron, etc.
(n.) Fetters; chains; handcuffs; manacles.
(n.) Strength; power; firmness; inflexibility; as, to rule with a rod of iron.
(n.) Of, or made of iron; consisting of iron; as, an iron bar, dust.
(n.) Resembling iron in color; as, iron blackness.
(n.) Like iron in hardness, strength, impenetrability, power of endurance, insensibility, etc.;
(n.) Rude; hard; harsh; severe.
(n.) Firm; robust; enduring; as, an iron constitution.
(n.) Inflexible; unrelenting; as, an iron will.
(n.) Not to be broken; holding or binding fast; tenacious.
(v. t.) To smooth with an instrument of iron; especially, to smooth, as cloth, with a heated flatiron; -- sometimes used with out.
(v. t.) To shackle with irons; to fetter or handcuff.
(v. t.) To furnish or arm with iron; as, to iron a wagon.
Example Sentences:
(1) The hypothesis that proteins are critical targets in free radical mediated cytolysis was tested using U937 mononuclear phagocytes as targets and iron together with hydrogen peroxide to generate radicals.
(2) The most successful dyes were phenocyanin TC, gallein, fluorone black, alizarin cyanin BB and alizarin blue S. Celestin blue B with an iron mordant is quite successful if properly handled to prevent gelling of solutions.
(3) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(4) The specific activities of extracts from cells grown under phototrophic and aerobic conditions were similar and not affected by the concentration of iron in the growth media.
(5) In the 153 women to whom iron supplements were given during pregnancy, the initial fall in haemoglobin concentration was less, was arrested by 28 weeks gestation and then rose to a level equivalent to the booking level.
(6) Typically the iron-iron axis (gz) of the binuclear iron-sulfur clusters is in the membrane plane.
(7) Increased iron levels in basal ganglia were generally associated with normal or elevated levels of ferritin immunoreactivity, for example, the substantia nigra in PSP and possibly MSA, and in putamen in MSA.
(8) Lead levels in contents and shells of eggs laid by hens dosed with all-lead shot were about twice those in eggs laid by hens dosed with lead-iron shot.
(9) Dietary factors affect intestinal P450s markedly--iron restriction rapidly decreased intestinal P450 to beneath detectable values; selenium deficiency acted similarly but was less effective; Brussels sprouts increased intestinal AHH activity 9.8-fold, ECOD activity 3.2-fold, and P450 1.9-fold; fried meat and dietary fat significantly increased intestinal EROD activity; a vitamin A-deficient diet increased, and a vitamin A-rich diet decreased intestinal P450 activities; and excess cholesterol in the diet increased intestinal P450 activity.
(10) Since iron from fortified formulas is well absorbed during the first three months of life, even if it is not immediately used for hemoglobin formation, an inccrease in the iron stores will occur...
(11) Dietary intakes, measured by three 24-hour recalls, revealed that protein, iron and Vitamin C generally met or exceeded the Nutrition Recommendations for age.
(12) This is a struggle for the survival of our nation.” As ever, after Trump’s media dressing-down, his operation was quick to fit a velvet glove to an iron fist.
(13) Ten weeks of iron therapy was not, however, long enough to increase iron stores.
(14) With both approaches, carbohydrate and fat had little influence whereas egg albumin had a significant inhibitory effect on the absorption of nonheme iron.
(15) The protein quality and iron bioavailability of mechanically deboned turkey meat (MDT) and hand-deboned turkey meat (HDT) were determined in rats.
(16) Serum levels of vitamins A and E, zinc and iron were determined in healthy control subjects and lepromatous leprosy patients belonging to an eastern state of India.
(17) Ferric iron in aqueous solution was used as an iron-only control.
(18) The implications of inhibition of protein kinase C by adriamycin-iron(III) are discussed.
(19) The duodenal mucosa of genotypically normal iron replete and iron deficient mice and mice with sex-linked (sla) and microcytic anemias (mk) was examined for the presence of iron-binding proteins.
(20) Ferredoxin reductase (Fd-reductase) supplies reducing equivalents obtained from NADPH to mitochondrial cytochrome P450 enzymes via the small iron-sulfur protein ferredoxin.
Restraint
Definition:
(n.) The act or process of restraining, or of holding back or hindering from motion or action, in any manner; hindrance of the will, or of any action, physical or mental.
(n.) The state of being restrained.
(n.) That which restrains, as a law, a prohibition, or the like; limitation; restriction.
Example Sentences:
(1) The electrical stimulation of the tail associated to a restraint condition of the rat produces a significant increase of immunoreactive DYN in cervical, thoracic and lumbar segments of spinal cord, therefore indicating a correlative, if not causal, relationship between the spinal dynorphinergic system and aversive stimuli.
(2) The current study used the restraint model of stress ulceration to compare the effects of a more potent prostaglandin analogue, 16,16-dimethyl prostaglandin E2, with hyperosmolar glucose and antacids.
(3) We assessed the relative restraints that are provided by fourteen currently available functional knee-braces, using six limbs in cadavera.
(4) The case is presented of a patient sustaining cervical spine dislocation and quadriplegia attributed to impingement upon a 3-point attachment harness restraint.
(5) Rats that were subjected to restraint stress for 18 h were found to have reduced myocardial glycogen and blood sugar levels and showed histological changes in heart and adrenals.
(6) Instead of shedding jobs, many employers seem to be favouring pay restraint and reduced working hours as a means of controlling costs."
(7) As Justices Stewart and White famously said, "the only effective restraint upon executive policy and power in the areas of national defence and international affairs may lie in an enlightened citizenry – in an informed and critical public opinion which alone can here protect the values of democratic government".
(8) Amid calls for restraint from senior politicians and police, the prime minister, Peter O’Neill has threatened to “terminate” the position of anyone going against the government.
(9) Although B-PELLET rats had normal basal morning ACTH concentrations 5 days after surgery, they exhibited augmented and sustained ACTH responses to five different ACTH-releasing stimuli (injection, restraint, chlorpromazine, and, under pentobarbital anesthesia, morphine or sham adrenalectomy).
(10) Restraint produced regional losses of bone most obviously in the proximal tibia.
(11) The committee responses delineated emerging standards governing specific areas of animal use, such as antibody production, induced disease, surgery, physical restraint, and behavioral conditioning.
(12) Nine of the groups were fed nutrient solutions of different compositions, antacid and sucralfate through orogastric tube during induction of stress ulcer by restraint and a cold ambient temperature.
(13) These observations are rationalized taking into account the ionic radii and coordination numbers of the cations and the conformational restraints of valinomycin molecules.
(14) Even without public spending restraint, those pressures will only increase as our population ages.
(15) The data revealed striking sex differences in body image, restraint and food attitudes, even in the youngest age group (12 to 13 years).
(16) Does the restraint required for head or nose-only exposure of rodents to inhaled aerosols or gases alter their breathing pattern?
(17) Behavioral problems resulting in the use of physical restraint is a clinical problem seen in the acute phase of recovery from cerebral contusion.
(18) Later-born cohorts were lower in Restraint and higher in Ascendance than early-born cohorts.
(19) In overturning the fine, the court today found that the commission had long "practiced restraint" in exercising its authority to sanction broadcasters for indecent content, and that the mammoth fine was an improper departure from that.
(20) The rate of AChE activity restoration in Gd-7 treated axolotl embryo depends on the level of the enzyme restraint and the stage of the embryo development.