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At and lower
At hatching, a typical salamander larva has eyes without lids, teeth in both upper and lower jaws, three pairs of feathery external gills and a long, somewhat laterally flattened body and tail with dorsal and ventral fins.
At pH values lower than the pKa of the α-ammonium group ( mean for the 20 common α-amino acids is about 9. 4 ), the nitrogen is predominantly protonated as a positively charged α-ammonium group.
At these lower speeds, ATM provides a useful ability to carry multiple logical circuits on a single physical or virtual medium, although other techniques exist, such as Multi-link PPP and Ethernet VLANs, which are optional in VDSL implementations.
At lower speeds this air has time to " get out of the way ", guided by the air in front of it that is in contact with the aircraft.
At pHs lower than 5 most fish eggs will not hatch and lower pHs can kill adult fish.
At the semi-enclosed bays with major freshwater inflows, such as head of Finnish Gulf with Neva mouth and head of Bothnian gulf with close mouths of Lule, Tornio and Kemi, the salinity is considerably lower.
At higher elevations, where the atmospheric pressure is much lower, the boiling point is also lower.
At the sides of the chest, the breast tissue can extend into the axilla ( armpit ), and can reach as far to the back as the latissimus dorsi muscle, extending from the lower back to the humerus bone ( the longest bone of the upper arm ).
At 21: 00, a fire was observed on the lower decks of the Orient.
At some small angular rate of rotation, however, an element of surface water can achieve lower potential energy by moving outward under the influence of the centrifugal force.
At lower levels the organizational hierarchy was managed by Party Committees, or partkoms ( партком ).
At the lower end of the Totentanz, Death calls, for example, the peasant to dance, who answers:
At the lower end of the electromagnetic spectrum, about 20 Hz to about 20 kHz, are frequencies that might be considered in the audio range.
At lower left is a discrete-time Fourier transform | DTFT, the result of sampling s ( t ).
At 2. 35 Eiffel hoisted a large tricoleur, to the accompaniment of a 25-gun salute fired from the lower level.
At the same time George maintained his correspondence with Luther and Philipp Melanchthon, discussing such questions as the evangelization of monasteries, the use of monastic property for evangelical purposes, and especially the foundation of lower schools for the people and of higher schools for the education of talented young men for the service of church and state.
At the protein level, the halophilic species are characterized by low hydrophobicity, overrepresentation of acidic residues, underrepresentation of Cys, lower propensities for helix formation and higher propensities for coil structure.
At lower levels it can fall to around a year.
At lower altitudes, the increased temperature is like day and night, literally: like starting the morning at the highland daytime high, and then adding the heat of the day, again.
At the time of his defeat, he was the longest-serving member of the lower house of the Diet, and he was also the first former prime minister to be defeated at a re-election since 1963.
At lower levels, it acts as a calcium analog, interfering with ion channels during nerve conduction.
At the lower end of the visible light spectrum, EMR becomes invisible to humansinfrared because its photons no longer have enough individual energy to cause a lasting molecular change ( a change in conformation ) in the visual molecule retinal in the human retina.
At lower pressures however the bonding becomes entirely localized into a regular covalent bond.

At and frequencies
At other frequencies, more radiant intensity is required to achieve the same luminous intensity, according to the frequency response of the human eye.
At radio and microwave frequencies, EMR interacts with matter largely as a bulk collection of charges which are spread out over large numbers of affected atoms.
At higher frequencies ( visible and beyond ), the effects of individual photons of the radiation begin to become important, as these now have enough energy individually directly or indirectly to damage biological molecules.
At high frequencies the capacitance begins to affect the inductor's behavior ; at some frequency, real inductors behave as resonant circuits, becoming self-resonant.
At higher frequencies, resistance and resistive losses in inductors grow due to skin effect in the inductor's winding wires.
At high frequencies, particularly radio frequencies ( RF ), inductors have higher resistance and other losses.
At VHF or higher frequencies an air core is likely to be used.
At frequencies offset from the strength of stimulated ( or spontaneous ) emission will be decreased according to the so-called " line shape ".
At higher frequencies, skin effect and proximity effect create additional winding resistance and losses.
At high frequencies, current travels near the surface of the wire because of the skin effect, resulting in increased power loss in the wire.
At frequencies much below VHF, ferrite circulators become impractically large.
At upper VHF and UHF frequencies, the metal skin of a car or aircraft can serve as a ground plane for whip antennas projecting from it.
At higher frequencies, the diode looks like an almost perfect ( very linear, even for large signals ) resistor.
At low frequencies, the charge can be removed and the diode turns off.
At higher frequencies, there is not enough time to remove the charge, so the diode never turns off.
At these frequencies, even small periodic driving forces can produce large amplitude oscillations, because the system stores vibrational energy.
At high frequencies, another effect called dielectric loss becomes significant, adding to the losses caused by resistance.
At high frequencies, current tends to run along the surface of the conductor.
At high enough frequencies 1 / ƒ noise is never dominant.
At higher frequencies, skin effect increases the effective resistance by confining the conduction to a thin layer of each conductor.
At high frequencies, a dielectric can have a significant resistive loss.
At low frequencies the field changes slowly enough to allow dipoles to reach equilibrium before the field has measurably changed.
At low frequencies, molecules in polar dielectrics are polarized by an applied electric field, which induces periodic rotations.

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