Cephems have h values in of 0. 20 – 0. 25 Å. Penams have values in the range 0. 40 – 0. 50 Å, while carbapenems and clavams have values of 0. 50 – 0. 60 Å, being the most reactive of the β-lactams toward hydrolysis.

** β-Lactams containing 3, 6-dihydro-2H-1, 3-thiazine rings are named cephems.

By convention, the bicyclic β-lactams are numbered starting with the position occupied by sulfur in the penams and cephems, regardless of which atom it is in a given class.

* β-Lactams fused to 3, 6-dihydro-2H-1, 3-thiazine rings are named cephems.

Cefmetazole and cefoxitin are classed as third-generation cephems.

The first pathway discovered was that of the penams and cephems.

While the ring closure in penams and cephems is between positions 1 and 4 of the β-lactam and is oxidative, the clavams and carbapenems have their rings closed by two-electron processes between positions 1 and 2 of the ring.

Antibiotics that inhibit cell wall synthesis: the Beta-lactam antibiotics ( penicillin derivatives ( penams ), cephalosporins ( cephems ), monobactams, and carbapenems ) and vancomycin.

This includes penicillin derivatives ( penams ), cephalosporins ( cephems ), monobactams, and carbapenems.

The biosynthesis of cephems branch off at isopenicillin N by an oxidative ring expansion to the cephem core.

Nonribosomal peptides are often dimers or trimers of identical sequences chained together or cyclized, or even branched.

Female hormones have been suggested to offer a measure of protection, but also less food allocation and less oxidatively stressful activity are plausible.

Unless all gadgets are properly operated -- and the wires and seals from the handles removed first -- no damage can be done.

and, `` I do think that families are the most beautiful things in all the world '', burst out Jo some five hundred pages later in that popular story of the March family, which had first appeared when Henrietta was eight ; ;

`` We are menaced for the first time in the history of the Republic by the open and unblushing effort of a multi-millionaire to purchase the Presidential nomination.

and this first section was somehow preserved ( there are always these annoying little mysteries about the actual facts of Malraux's life ) when the Gestapo destroyed the rest.

A good many pages of the first section are taken up with an account of the dogged determination of the prisoners to write to their wives and families -- even when it becomes clear that the Germans are simply allowing the letters to blow away in the wind.

Patchen's musicians are outsiders in established jazz circles, and Patchen himself has remained outside the San Francisco poetry group, maintaining a self-imposed isolation, even though his conversion to poetry-and-jazz is not as extreme or as sudden as it may first appear.

His first book, Before The Brave ( 1936 ), is a collection of poems that are almost all Communistic, but after publication of this book he rejected Communism, and advocated a pacifistic anarchy, though retaining his revolutionary idiom.

Yet we who lean upon such a man and draw strength from him and expect interpretation of the infinite through him -- we who readily accept his sacrifice as our due, we of the congregations are the first to tell him what is in our minds instead of listening to what is in his soul.

Next year is the 80th anniversary of the signing of the treaty between Korea and the United States and experts in Seoul are trying to find the correspondence between Frederick Frelinghuysen, who was Secretary of State in 1883 and 1884, and Gen. Lucius Foote, who was the first minister to Korea.

To illustrate, the first blessing in the King James Bible reads: `` Blessed are the poor in spirit ; ;

Independence Day is the appropriate date as a symbolical reminder of the American article of faith that governments are instituted among men to secure to them certain inalienable rights, the first of which is life, and when any government becomes subversive of that end, it is the right of the people to alter or abolish it.

But it seems that pressures against him are coming from somewhere -- in the first place from China, but perhaps also from that `` China Lobby '' which, I was assured in Moscow nearly two years ago, exists on the quiet inside the party.

Since accurate base maps are necessary for any planning program, the first step taken by the planning division to implement the long-range state plan has been to prepare two series of base maps -- one at a scale of 1 inch to a mile, and the second a series of 26 sheets at a scale of 1 inch to 2000 feet, covering the entire state.

The State Ballet of Rhode Island, the first incorporated group, was formed for the purpose of extending knowledge of the art of ballet in the Community, to promote interest in ballet performances, to contribute to the cultural life of the State, and to provide opportunity for gifted dance students who, for one reason or another, are unable to pursue a career and to develop others for the professional state ; ;

We who are living today may learn a valuable lesson from those who celebrated the first Thanksgiving Day.

The funds recouped by reductions in item 12 above are used: first, to increase the unadjusted allotments to the specified minimum in those States where the unadjusted allotment is less than the minimum allotment ( item 13 above ) ; ;

The first one or two roof boards ( marked `` E '' in fig. 6 ) are slipped into place across the roof beams, from outside the shelter.

The first Atlas ICBM's are now operational, the first two Polaris submarines are expected to be operational this calendar year, and the first Titan ICBM's next year.

If the plants are cared for and protected over the winter, the second year is more prolific than the first.

In the left part there were four beads, which in the first row have unitary values ( 1, 2, 3, and 4 ), and in the right side there are three beads with values of 5, 10, and 15 respectively.

In the < tt > ShiftRows </ tt > step, bytes in each row of the state are shifted cyclically to the left.

The shells of abalones have a low and open spiral structure, and are characterized by several open respiratory pores in a row near the shell's outer edge.

Within an expression containing two or more occurrences in a row of the same associative operator, the order in which the operations are performed does not matter as long as the sequence of the operands is not changed.

For a two-dimensional array, the element with indices i, j would have address B + c · i + d · j, where the coefficients c and d are the row and column address increments, respectively.

Here we can store 6 elements they are stored linearly but starting from first row linear then continuing with second row.

In the row-major order layout ( adopted by C for statically declared arrays ), the elements in each row are stored in consecutive positions and all of the elements of a row have a lower address than any of the elements of a consecutive row:

When working with weeks rather than months, a continuous format is sometimes more convenient, where no blank cells are inserted to ensure that the first day of a new month begins on a fresh row.

Capoeira instruments are disposed in a row called bateria.

With each of the three fingers limited to its own row, 229 chords are possible with 3 fingers.

Examples include cardboard cutouts, which can be used to make tassels, fringe, and many other items ; a pom-pom circle, used to make pom-poms ; a tape measure and a gauge measure, both used for measuring crocheted work and counting stitches ; a row counter ; and occasionally plastic rings, which are used for special projects.

In knitting, each stitch is supported by the corresponding stitch in the row above and it supports the corresponding stitch in the row below, whereas crochet stitches are only supported by and support the stitches on either side of it.

The switches are usually organized in a row or a simple grid.

The row products of the terms discarding zeros in the matrix above, are the natural numbers, 1, 2, 3 ...

* m, n, k-games are a generalization of gomoku to a board with m × n intersections, and k in a row needed to win.

* Connect ( m, n, k, p, q ) games are another generalization of gomoku to a board with m × n intersections, k in a row needed to win, p stones for each player to place, and q stones for the first player to place for the first move only.

However, this is not correct, and is a manifestation of the gambler's fallacy ; the event of 5 heads in a row and the event of " first 4 heads, then a tails " are equally likely, each having probability.

If one flips a coin 21 times in a row and obtains 21 heads, one might rationally conclude a high probability of bias towards heads, and hence conclude that future flips of this coin are also highly likely to be heads.

Elementary row operations are used to reduce a matrix to what is called triangular form ( in numerical analysis ) or row echelon form ( in abstract algebra ).

These vehicles are often converted full-size station wagons that may or may not feature a traditional landau roof and bars, although in recent years, following the end of the full-size station wagon era, the preference has shifted towards minivans with slide-over landau bar panels for the third row windows.