However it is now thought this was probably a deliberate change in composition and overall the use of brass increases over this period making up around 40 % of all copper alloys used in the Roman world by the 4th century AD.

However, as of September 2006, the PPM stands at 87. 5 % after a period of steady increases in the annual moving average since 2003.

However, while increases in crop yield are the most obvious applications of modern biotechnology in agriculture, it is also the most difficult one.

However, they are much less toxic than their predecessors, the barbiturates, and death rarely results when a benzodiazepine is the only drug taken ; however, when combined with other central nervous system depressants such as alcohol and opiates, the potential for toxicity and fatal overdose increases.

However, as it gains in volume from the very numerous tributary streams, large and small, that it receives en route, its velocity increases, and in the wet season reaches, even in certain stretches.

However, after enough carbamazepine has been presented to the liver tissue, the CYP3A4 activity increases, speeding up drug clearance and shortening the half-life.

However, public opposition to increases in defence spending — during a period when economic constraints require reduced spending for social welfare — has created differences among the political parties regarding a broadly acceptable level of new defence expenditure.

However, this is a relatively small number especially when playing with more than four people, so many domino sets are " extended " by introducing ends with greater numbers of spots, which increases the number of unique combinations of ends and thus of pieces.

However, France has a number of MVNOs which increases competition.

However, under some conditions, e. g. less fertile soils or less predictable drought regimes, the proportion of evergreen species increases and the forests are characterised as " sclerophyllous ".

However, creating more data to input to machine-learning systems simply requires a corresponding increase in the number of man-hours worked, generally without significant increases in the complexity of the annotation process.

However due to a slight increase in internal leakage as the pressure increases, a truly constant flow rate cannot be achieved.

However there is no documented evidence that the policy of requiring periodic changes in passwords increases system security.

However, high levels of oxidative damage increases the degree of cross-linking between protein fragments, rendering the aggregates resistant to proteolysis.

However, depletion of HAUSP does not result to a decrease in p53 levels but rather increases p53 levels due to the fact that HAUSP binds and deubiquitinates Mdm2.

However, as the size of the boat increases, the benefits of mainsail roller furling increase dramatically.

However, if two condoms are used simultaneously ( male condom on top of male condom, or male condom inside female condom ), this increases the chance of condom failure.

However, ASR in the field of document production has not seen the expected increases in use.

However, increases in agricultural production have been much slower than industrial growth.

However, as we have seen, reducing a tachyon's energy increases its speed, so that the single hyperbola formed is of two oppositely charged tachyons with opposite momenta ( same magnitude, opposite sign ) which annihilate each other when they simultaneously reach infinite speed at the same place in space.

However, ion thrusters carry a fundamental price: the power imparted to the exhaust increases with the square of its velocity while the thrust increases only linearly.

However, as distance increases, rules and protocols need to be implemented.

However this amplifies noise ,< ref name =" Christy1998 "> increases inter-satellite calibration biases and enhances surface contamination.

) However, pipelining at that level was already used in some high performance CISC " supercomputers " in order to reduce the instruction cycle time ( despite the complications of implementing within the limited component count and wiring complexity feasible at the time ).

However, the complexity of erosion processes and the number of areas that must be studied to understand and model them ( e. g. climatology, hydrology, geology, chemistry, physics, etc.

However, the opera has been acclaimed for its incorporation of advanced harmonic language and rhythmic complexity into the Italian operatic form.

However, the intermediate entries can grow exponentially large, so it has exponential bit complexity.

However, each of these variables has its own stack on which it can be pushed and popped ( STASHed and RETRIEVEd, in INTERCAL terminology ), increasing the possible complexity of data structures.

However, critics view irreducible complexity as a special case of the " complexity indicates design " claim, and thus see it as an argument from ignorance and God of the gaps argument.

However, systems based on hand-written rules can only be made more accurate by increasing the complexity of the rules, which is a much more difficult task.

However, stellarators, unlike tokamaks, do not require a toroidal current, so that the expense and complexity of current drive and / or the loss of availability and periodic stresses of pulsed operation can be avoided, and there is no risk of toroidal current disruptions.

However, the complexity and difficulty of finding agreement on these issues proved insurmountable, and instead the parties adopted a 2-year " Plan of Action " to advance efforts and to devise mechanisms for implementing the Kyoto Protocol, to be completed by 2000.

However, as the complexity of the circuits grew, problems started arising.

However, the exact definition of business, like much else in the philosophy of business, is a matter of debate and complexity of meanings.

However, employment of this pattern, as with similar design patterns, may result in unnecessary complexity and extra work in the initial writing of code.

However, CORBA does not place a restriction on the complexity of the calls.

However, more ambitious efforts to expand the tripartite system resulted in new taxonomic systems of increasing complexity.

However, more ambitious efforts to expand the tripartite system resulted in new taxonomic systems of increasing scope and complexity.

However, their additional weight, complexity and expense did not justify the advantage of faster line retrieval in the eyes of many anglers.

However, the complexity of doing so is deceptively great.

However, their high complexity ( compared to both older carburetors and fuel injection ) both made problems common and maintenance difficult.

However database and directory administrators can take countermeasures against online attacks, for example by limiting the number of attempts that a password can be tried, by introducing time delays between successive attempts, increasing the answer's complexity ( e. g. requiring a CAPTCHA answer or verification code sent via cellphone ), and / or locking accounts out after unsuccessful logon attempts.

However, as the complexity of the kits offered continues to increase, build times have increased as well.

However, Arthur Penn persuaded the writers that the relationship's emotional complexity was underwritten, it dissipated the passion of the title characters and it would harm the audience's sympathy for the characters who would write them off as sexual deviants because they are criminals.

However this project soon ran into difficulties due to its complexity, and was redesigned into a smaller form that would eventually be delivered as the TX-2 in 1958.