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hereinafter , the present invention will be described in detail with reference to the accompanying drawings . fig1 is a block diagram showing the configuration of an adaptive frequency hopping apparatus according to the present invention . as shown in fig1 , the adaptive frequency hopping apparatus comprises a frequenc...
7
accordingly , the present invention relates to the compounds of the general formula ( i ) represented below and their pharmaceutically acceptable salts , enantiomers and their diastereomers ; wherein , v , w , x , y & amp ; z independently represents , ‘ c ’ or ‘ n ’; r 1 , represents groups selected from hydrogen , ke...
0
as summarized above , described herein are novel methods for providing liposomal formulations of camptothecins , camptothecin prodrugs , and analogs thereof , and compositions formulated thereby . it will be understood that the term camptothecin as used herein is intended to refer collectively to various camptothecins ...
0
the invention is applicable in general to polar amplification stages . in the following description the invention is described with specific reference to the example of an amplification stage incorporating an envelope tracking ( et ) polar modulation technique . however this is for the purposes of illustrating an exemp...
7
referring now to fig1 a and 1b , there is shown an all - metal ultra - high vacuum ( uhv ) o - ring seal arrangement 10 in accordance with one embodiment of the invention having an o - ring 12 with a strong tendency to increase in outside diameter and reduce in inside diameter . the o - ring is comprised of a heat - re...
1
as shown in the drawings , the steam engine of the present invention comprises a high pressure boiler 11 surrounded by a low pressure feedwater tank 13 . supported on top of the boiler 11 and feedwater tank 13 is a low pressure water storage tank 15 . rainwater , which should be used in this system whenever possible , ...
5
the problems set forth above as well as further and other problems are solved by the present teachings . these solutions and other advantages are achieved by the various embodiments of the teachings described herein below . the system and method of the present embodiment automatically minimize delay in updating time at...
7
referring more particularly to the drawings , fig1 and 2 show the first embodiment of the exercise apparatus 10 according to the present invention . the exercise apparatus 10 comprises a dynamic means 12 , a framework means 14 and a resistance means 16 . the dynamic means 12 comprises an upper frame 40 which is pivotal...
0
the present invention is illustrated with an implementation utilizing a touch pad as the medium . the touch pad , a pressure sensitive surface that can sense a contact point , which is the point impressed upon its surface by the user &# 39 ; s motion , transmits the coordinates of the contact point to an operating syst...
6
an embodiment of the invention leverages key information captured by the invention disclosed in the following document , and provides an extension from persons and systems to track request scope in terms of affected record types . this document is incorporated herein in its entirety by this reference thereto : [ pa3697...
6
referring now to the drawings , in which like numerals indicate like elements throughout the several figures , fig1 illustrates an optical chromakey field shown generally at 10 according to a preferred embodiment of the present invention , in the environment of a television studio . the optical chromakey field 10 is pl...
7
in general terms , the present invention seeks to detect airborne particles and / or to provide discrimination according to particle size using apparatus that has low cost , small size , low weight , high ruggedness , high reliability , low maintenance and long service life , and is suitable for high production volumes...
6
generally speaking , the invention features a transaction printer that encodes and reads micr indicia at a point - of - sale . a sensor is provided in the micr encoding portion of the printer to detect the edge of the check and allow precise registration of the edge for subsequent printing of the micr characters . the ...
6
the embodiments below explain the invention more specifically . however , it should be construed that such embodiments are only for explaining the invention by examples , instead of limiting the scope of the invention in any forms . the steps are : add diethyl methylmalonate and anhydrous dmf into a reaction flask , st...
2
as a preliminary matter , it will readily be understood by one having ordinary skill in the relevant art (“ ordinary artisan ”) that the present invention has broad utility and application . furthermore , any embodiment discussed and identified as being “ preferred ” is considered to be part of a best mode contemplated...
0
the compounds of this invention are useful in the inhibition of farnesyl - protein transferase and the farnesylation of certain proteins . in a first embodiment of this invention , the farnesyl - protein transferase inhibitors are illustrated by the formula i : ## str2 ## wherein : b ) aryl , heterocycle , cycloalkyl ,...
2
a preferred embodiment of the present invention will be described with reference to fig3 . the moving optical component ( henceforth referred to as “ lens ”) 1 , is suitably affixed inside the bore of a precisely machined tubular member 2 ( henceforth called “ tube ”). the tube 2 , is suspended from the main support 4 ...
6
as can be seen in fig1 and 2 , the hanger 1 consists of a monolithic structure of an item made from plastic suitable for its purpose including a body 2 , equipped at the two ends with a clip structure 2 . 1 , suitable for holding one or more lingerie , underwear and similar clothing items , and a hook 3 , which extends...
0
reference will now be made in detail to the preferred embodiments of the present invention , examples of which are illustrated in the accompanying drawings . fig4 illustrates a graph showing an lev 8 opening pulse value vs . compressor starting time period in an lev 8 controlling method for an air conditioner with two ...
5
a device and a method for switching processes selectable by keys on a human interface device ( hid ) are described hereinafter for addressing the foregoing problems . for purposes of brevity and clarity , the description of the invention is limited hereinafter to applications related to switching processes selectable b...
6
the present invention now will be described more fully hereinafter with reference to the accompanying drawings , in which some examples of the embodiments of the inventions are shown . indeed , these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth h...
6
detailed descriptions of the preferred embodiment are provided herein . it is to be understood , however , that the present invention may be embodied in various forms . therefore , specific details disclosed herein are not to be interpreted as limiting , but rather as a basis for the claims and as a representative basi...
2
advantages of the present invention will become more apparent from the detailed description given hereinafter . however , it should be understood that the detailed description and specific examples , while indicating preferred embodiments of the invention , are given by way of illustration only , since various changes ...
0
tone mapping is a process of taking a hdr image with a high dynamic range and with typically 16 bit or 32 bit , and converting such an image into an image that has contrast that was optimally adjusted for the screen or for a printer . the simplest class is called monotonic tone mapping , defined as in equation 1 , j is...
6
in the description of the present invention , it should be noticed , orientation or position relation indicated by terms such as “ at the center of ,” “ on ,” “ below ,” “ in front of ,” “ behind ,” “ at the left of ,” “ at the right of ” are orientation or position relation in connection with the figures . these terms...
7
an embodiment for barrel - binding and packaging articles by the use of packaging film , which embodies a method and a device according to the present invention , will now be described with reference to the drawings . referring to a fixed - side seal cutting assembly 1 shown in fig1 and 2 which is standing in the initi...
1
with reference to fig5 , in accordance with an embodiment of the present invention a method of non - coherent ultrawideband communication is provided , the method including the steps of , receiving an ultrawideband signal comprising a plurality of transmitted symbols at a plurality of parallel correlators , the signal ...
7
as shown in the exemplary drawings for the purposes of illustration , an embodiment of an integrated system made in accordance with the principals of the present invention , referred to generally by the reference numeral 10 , is provided for simplified setup and operation of an electrophysiology amplifying and switchin...
0
fig1 and 2 show an hydraulic fastener 10 which engages a screw threaded bolt 20 . fastener 10 has a body 11 with a screw threaded bore 12 which engages threads 21 on bolt 20 . body 11 has six flat faces 13 to provide purchase for a tensioning tool . the external profile of body 11 can be varied to suit the different ty...
8
fig1 - 10 illustrate details of a cooking table 10 according to an embodiment of the disclosure . the cooking table 10 is in essence a mobile cooking station . according to the depicted embodiment , the cooking table 10 includes a table top 12 supported by a suitable supporting base including a plurality of legs 22 . i...
5
a method for manufacturing a substrate of erbium - doped optical fibers using the mcvd method will now be described in conjunction with fig1 and 2 . in accordance with the mcvd method , a connecting tube 22 is first clamped at one end thereof on a clamping chuck 24 of a lathe ( not shown ), as shown in fig2 . a quartz ...
2
referring to fig5 the memory device comprises a power level detector 120 , an internal voltage converter ( ivc ) 600 and internal circuits 60 . the internal circuits 60 will be understood to be the same as those of fig1 . upon power up , a power level detector 120 generates a power - up signal pdt . the signal pdt acti...
6
the following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention , its application , or uses . for example , the present invention is hereafter described in the context of a fuel cell fueled by reformed gasoline . however , it is to be understood that...
2
in fig1 an up / down counter generally designated as 10 has two up count inputs or increment inputs having leads 12 and 14 connected thereto and being supplied with positive pulse ( pp ) and bias 1 frequency pulses respectively . up / down counter 10 additionally has two decrement or down inputs with leads 16 and 18 co...
7
in fig1 the aligned antenna is represented by three sensors c 1 , c 2 and c 3 and the misaligned antenna is shown by the sensors c 1 , c 2 and c 2 , the position of the sensor c 2 resulting from a translation of the central sensor c 2 of the aligned antenna along a vector of misalignment ε having its ends identical wit...
6
the following description refers to the accompanying drawings . among the various drawings the same reference numbers may be used to identify the same or similar elements . while the following description provides a thorough understanding of the various aspects of the claimed invention by setting forth specific details...
6
the low dielectric constant materials of the present invention are prepared by subjecting a borazine derivative as a starting material , i . e ., an inorganic or organic compound containing a borazine skeleton structure of the formula ( 1 - 1 ) in its molecule or a substituted borazine ( 1 - 2 ), to a condensation reac...
7
the present invention ( hereinafter “ system ”) aims to monitor the cattle breeding season , under extensive livestock farming conditions , through the bull activity . the system allows knowing whether the said bull has performed mounting activities , and which cows it has mounted , date and time the said mountings hap...
0
the liquid - crystalline alignment layers preferably comprise liquid - crystalline main - chain polymers , liquid - crystalline side - chain polymers , a combination of the two , liquid - crystalline networks , guest - host systems or mixtures of the above with one another and / or with low - molecular - weight liquid ...
8
referring to fig1 a processor power delivery system 10 enables a dc - to - dc converter 12 to be assembled to a processor carrier 18 in the z - axis . the z - axis ( indicated by an arrow in fig1 ) is the direction that is transverse to the surface of a motherboard 28 and transverse to the lengths of the converter 12 a...
7
although the following description of the present invention teaches a hand tool powered by a removable battery it is to be understood that the hand tool may also be powered by a corded ac electric motor in place of the battery powered dc motor described herein . fig1 illustrates a hand held nailing machine 10 generally...
1
the invention described herein is directed , in certain embodiments , to methods of treating a category of lip deformity characterized by excessive bulk to the upper and / or lower lip with excessive exposure of mucous membrane . this condition is referred to as hypervolemic lip deformity or lip ectropion . hypervolemi...
0
various apparatuses or methods will be described below to provide an example of an embodiment of each claimed invention . no embodiment described below limits any claimed invention and any claimed invention may cover apparatuses and methods that differ from those described below . the claimed inventions are not limited...
2
referring now to the drawings in greater detail wherein the figures are for the purpose of illustrating preferred embodiments of the present invention only and not for the purpose of limiting the same , a cross - sectional view of a typical piston / cylinder arrangement in an adiabatic diesel engine is illustrated in f...
2
the invention is based on the appropriate definition of regions of interest ( rois ), as will be explained briefly with reference to fig2 . in a 2 - d x - ray or angiography image 11 containing blood vessels 12 for example , what is understood quite generally by an roi is a user - defined section of the angiography ima...
0
all patents , patent applications , government publications , government regulations , and literature references cited in this specification are hereby incorporated herein by reference in their entirety . in case of conflict , the present description , including definitions , will control . thermotoga neapolitana xylos...
2
with reference to fig1 , a flat card , for example a tc 03 ( trademark ) flat card made by trützschler gmbh & amp ; co . kg of mönchengladbach , germany , has a feed roller 1 , feed table 2 , lickers - in 3 a , 3 b , 3 c , cylinder 4 , doffer 5 , stripper roller 6 , nip rollers 7 , 8 , web - guiding element 9 , web fun...
5
in the following description of various illustrative embodiments , reference is made to the accompanying drawings , which form a part hereof , and in which is shown , by way of illustration , various embodiments in which the invention may be practiced . it is to be understood that other embodiments may be utilized and ...
5
referring to the drawings in particular , the present invention pertains to a mounting technique for the side - by - side mounting of side doors ( 6 , 7 , 8 , 9 ) on a vehicle body ( 5 ). this pertains specifically to the mounting unit ( 1 ) provided herefor and , further , also to the 15 mounting process as well as th...
1
the following definitions and explanations provide background information pertaining to the technical field of the present invention , and are intended to facilitate the understanding of the present invention without limiting its scope : api : ( application program interface ) a language and message format used by an a...
6
described below are various methods for synthesizing some of the polyorganofullerene derivatives via polynitrofullerenes or polycyclosulfated fullerenes described herein . polynitrofullerene derivatives , f --( no 2 ) n , which act as a reactive intermediate in this invention , can be prepared by one of the following m...
2
referring now to fig1 - 6 , there is shown a coil form 10 in accordance with one form of the invention . the coil form 10 includes a generally cylindrical 12 having axially spaced circular side member or flanges 14 , 16 . a reference surface 12a is provided to cooperate with coil winding machinery and insure that the c...
7
porous pellets are prepared by compacting powder to form porous anode bodies ( fig5 ). the pellets may be made from any suitable conductive material . preferred materials include metals , conductive metal oxides or conductive metal nitrides . more preferably the anode comprises a valve metal , conductive valve metal ox...
8
fig1 is a diagram showing an overall structure of the fuel vapor processing system embodying the present invention , in which the parts corresponding to those of the prior art shown in fig6 are denoted with like numerals without repeating the description of such parts . referring to fig1 , a fuel tank 1 and a canister ...
8
one version of a roller - belt conveyor embodying features of the invention is shown in fig1 . the conveyor 24 transports articles on a roller belt 12 , which forms an endless belt loop defining a belt path . the belt path can be considered to be divided into four segments : ( a ) an upper carryway segment 26 along whi...
1
the method for preparing cyclic oligosiloxane according to the invention is by reacting an organopolysiloxane having the general formula ( 1 ) and / or an organopolysiloxane having the general formula ( 2 ) in the presence of a catalyst . herein r 1 is each independently hydrogen , hydroxyl or a substituted or unsubsti...
2
while this invention is susceptible of embodiment in many different forms , there are shown in the drawings , and will be described herein in detail , specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not i...
0
this description pertains in some specific embodiments to televisions with the capability to run java ( or similar ) applets and display output from the java applets to the television display . however , the invention is not limited to use with java applets or televisions . other embodiments of the invention may be use...
6
the present invention relates to a hydraulic load lifting system and , in particular , to a system including a hydraulic cylinder and means for preventing a load carried by said cylinders from moving should a leak occur in the hydraulic line to the cylinder . hydraulic systems , such as those found in excavators and th...
5
fig1 illustrates a shredder apparatus 10 having a full bin indicator 24 in accordance with an embodiment of the present invention . the apparatus 10 generally includes a shredder housing 20 , a bin 22 , and an indicator 24 . in the embodiment shown , the indicator 24 is a flap attached to the bin side ( underside ) of ...
1
in fig1 an insulating perforated plate or perforation matrix 1 is made of quartz , glass , ceramic or a synthetic material having low vapor pressure , the matrix containing a plurality of regularly disposed holes 2 . about and between these holes on an upper side thereof there are , extending in rows in one direction ,...
7
digital communication systems typically employ packet - switching systems that transmit blocks of data called packets . typically , data to be sent in a message is longer than the size of a packet and must be broken into a series of packets . each packet consists of a portion of the data being transmitted and control i...
6
there is schematically illustrated in fig1 a chamber 10 provided with a first conveying system 12 consisting of a conduit 14 having one end 16 near the bottom of the chamber 10 and a second end 18 directly exposed to the atmosphere . as will be apparent hereinafter , in its broader aspects the present invention is desi...
0
reference will now be made in detail to embodiments of the invention , examples of which are illustrated in the figures . each embodiment is provided by way of explanation of the invention and not meant as a limitation of the invention . it is intended that the invention include modifications and variations to the embo...
3
turning now to the detailed description of the preferred arrangement or arrangements of the present invention , it should be understood that the inventive features and concepts may be manifested in other arrangements and that the scope of the invention is not limited to the embodiments described or illustrated . the sc...
6
fig1 to 7 show an oven chamber having first filling openings 1 , 3 and 5 and second filling openings 2 and 4 . further , a riser 6 is connected to the oven chamber . in the first step of the first portion of the process , which is represented in fig1 coal is filled through filling opening 5 positioned adjacent riser 6 ...
2
the present inventors have unexpectedly discovered that due to the small molecular size of the fluoride , and its affinity for multiple cross - linking sites , the fluoride can produce cross - linkage in hair and cause temporary or permanent restructuring of the hair ; i . e . causes straightening , smoothing , defrizz...
0
a preferred embodiment of the present invention will now be described by way of example and with reference to the accompanying drawings . the pbx system 10 is connected to pstn 2 , pstn meaning public switched telephone network — this is the outside external telephone system . the pbx is connected to pstn by regular ph...
7
fig1 is a block diagram illustrating a configuration example of a call system 10 according to a first exemplary embodiment of the present invention . the call system 10 includes a calling - side device 100 , a called - side device 200 , a related contact destination device 300 , and a caller identification server 400 (...
7
referring jointly to fig1 and 2 , there is shown a 5 . 25 &# 34 ; magnetic data disk 10 which comprises a circular disk of thin high polymer material on which a coating of magnetic recording material is formed on both surfaces to which a recording / reproducing magnetic head ( not shown ) is to be brought in close prox...
6
fig1 a illustrates a signal generator 100 with pre - corrected digital inputs 181 and 183 according to an embodiment of the present invention . in a quadrature modulation block 101 , digital - to - analog converters ( dac ) 103 and 107 , respectively , receive digital inputs 181 and 183 and send analog signals correspo...
7
fig1 illustrates an airbag cover 1 , which , in this drawing , is opened and connected by a hinge 2 to a surrounding area 3 of the airbag cover . the surrounding area 3 is part of , for example , a dashboard , a headrest , an armrest of a motor vehicle seat , a column , vehicle interior trim paneling , etc . an undeplo...
1
referring to fig3 a four - way reversing valve according to the present invention includes a cylindrical valve casing 30 . the valve casing 30 has a supply port p formed at one side of the upper surface thereof , two load ports a and b formed with a slight gap between them and placed at the same height on the outer cir...
5
referring now to fig1 there is shown a plan view of a thermal ink jet printer 10 . the printer 10 is shown broken away , and in the interior thereof there may be seen a roll or platen 11 for carrying and indexing the print media , which may be paper , overhead transparency film , or the like . a carriage 12 is mounted ...
8
in a typical melt - spinning system as depicted in fig1 an extruder 10 extrudes a polymer melt through a spin pack 12 having a plurality of spin pots 14 therein . the spin pots 14 include a plurality of spinneret orifices that , in turn , form a plurality of filament threadlines 16 . it will be understood that , depend...
3
reference will now be made in detail to the preferred embodiments of the present invention , examples of which are illustrated in the accompanying drawings . fig5 is the control sequence of defect area management for an optical disc in accordance with the present invention , and shows the operation of an optical disc r...
6
throughout this document , all temperatures are given in degrees celsius and all percentages are weight percentages , unless otherwise stated . the term “ halogen ” or “ halo ” refers to f , cl , i , or br . the term “ alkyl ”, “ alkenyl ”, or “ alkynyl ” refers to a straight chain or branched chain carbon radical cont...
0
synthesis of an amine terminated cholesterol group was based on literature . to a stirred solution of 1 . 0 molar equivalent i ( n - boc - 2 , 2 ′-[ ethylenedioxy ] diethylamine , sigma - aldrich ) and 1 . 1 molar equivalents ii ( cholesteryl chloroformate , sigma - aldrich ) in anhydrous toluene , 1 . 5 molar equivale...
0
the present invention now is described more fully hereinafter with reference to the accompanying drawings , in which embodiments of the invention are shown . this invention may , however , be embodied in many different forms and should not be construed as limited to the embodiments set forth herein ; rather , these emb...
7
fig1 a and 1b depict exemplary systems 100 for deriving and analyzing periodic information in a vibration signal . in the embodiment of fig1 a , a sensor 104 , such as an accelerometer , is attached to a machine 102 to monitor its vibration . although an accelerometer is depicted in the exemplary embodiment of fig1 a ,...
6
in the following examples , nss - tag is proved to be feasible to be applied to monitor recombinant protein expressed by zucchini yellow mosaic virus vector . nss - tag is useful for western blotting or enzyme - linked absorption assay ( elisa ) to detect recombinant protein . when nss - tagged zymv hc - pro and wsmov ...
2
referring now to the drawings , wherein like reference characters represent like elements , there is shown a preferred embodiment of a topical hyperbaric apparatus 2 in accordance with the present invention . as is conventional , hyperbaric apparatus 2 is to be applied to the patient &# 39 ; s body for the treatment of...
0
the following detailed description is of the best presently contemplated modes of carrying out the invention . this description is not to be taken in a limiting sense , but is made merely for the purpose of illustrating general principles of embodiments of the invention . the scope of the invention is best defined by t...
1
references in this specification to “ an embodiment ”, “ one embodiment ”, or the like , mean that the particular feature , structure or characteristic being described is included in at least one embodiment of the present invention . occurrences of such phrases in this specification do not necessarily all refer to the ...
6
it is now contemplated to solvent - deasphalt an asphalt - containing mineral oil with a liquid solvent consisting of at least two components selected from the group consisting of hydrogen sulfide , carbon dioxide , and light hydrocarbon , said light hydrocarbon being selected from the group consisting of propane , but...
1
the above and other technical details , features and effects of the present invention will be will be better understood with regard to the detailed description of the embodiments below , with reference to the drawings . the drawings as referred to throughout the description of the present invention are for illustration...
7
the present invention now will be described more fully hereinafter with reference to the accompanying drawings , in which preferred embodiments of the invention are shown . this invention may , however , be embodied in many different forms and should not be construed as limited to the embodiments set forth herein ; rat...
6
the following description is of the best embodiments presently contemplated for carrying out this invention . this description is made for the purpose of illustrating the general principles of this invention and is not meant to limit the inventive concepts claimed herein . referring now to fig1 , there is shown a disk ...
6
in the following description , numerous details are set forth to provide an understanding of the present invention . however , it will be understood by those skilled in the art that the present invention may be practiced without these details and numerous variations or modifications from the described embodiments may b...
4
fig1 shows a fastener device 100 of the prior art . the prior art fastener 100 has a rounded upper surface 110 , a central hole 120 , an embedded fastener 130 , slots 140 , and a hole 150 . the prior art fastener 100 is made of a molded plastic , and is placed below a slat opening in a slat floor . a common bolt type f...
5
the following description is merely exemplary in nature and is not intended to limit the present disclosure , application , or uses . it should be understood that throughout the drawings , corresponding reference numerals indicate like or corresponding parts and features . as used herein , the terms module , control mo...
5
the present invention is directed to an improved method for administering a safe and effective dosage of tranilast for the treatment or prevention of restenosis associated with coronary intervention . m . nobuyoshi conducted pathological observations on coronary vessels of 7 patients who died within 3 months after coro...
0
with reference to fig2 , an “ active cardstack ” 22 is shown as having five images 24 , 26 , 28 , 30 and 32 . the images extend diagonally and provide a perception of rearward images being partially covered by forward images , so that only the foremost image 24 is shown in its entirety . each of the images represents d...
6
the present invention is based , in part , on the observation that transmitters of radio frequency signals are calibrated for particular load conditions . in a typical situation , a transmitter is calibrated with test equipment as the load and then used with an antenna as the load . the load conditions created by the t...
6
fig1 is a general plan view of a portion of a document processing machine , like a document sorting machine , designated generally as machine 10 . the document handling apparatus of this invention is included in the machine 10 and is designated generally as apparatus 12 . the apparatus 12 includes a receptacle means 14...
1
fig1 through 5 , discussed below , and the various embodiments used to describe the principles of the present invention in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the invention . those skilled in the art will understand that the principles of the...
7
the following detailed description and appended drawings describe and illustrate various exemplary embodiments of the invention . the description and drawings serve to enable one skilled in the art to make and use the invention , and are not intended to limit the scope of the invention in any manner . in respect of the...
8
preferred embodiments of the present invention will be described in detail herein below with reference to the annexed drawings . in the drawings , the same or similar elements are denoted by the same reference numerals even though they are depicted in different drawings . in the following description , a detailed descr...
7
fig1 is a schematic diagram showing the essential portions of a first embodiment of the present invention as it is applied to a three - plate type ccd color camera ( image pickup apparatus ). in fig1 the reference numeral 101 designates a variable apex angle prism as optical image deflecting means . the variable apex a...
7
among the compounds of formula ( 1 ), those having the ( s )- configuration at position 20 of the e - ring are preferred for pharmaceutical use . r 1 and r 2 are preferably and independently ( the same or different ) h , a hydroxyl group , a halo group , an amino group , a nitro group , a cyano group , a c 1 - 3 alkyl ...
2